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Cosmetology, Cosmetics,
Cosmeceuticals: Definitions and
Regulations
LARRY E. MILLIKAN, MD
T
he growth of the cosmetic industry, together
banned for provisional usages, and there has been ex-
panded oversight on tartrazine, or FD&C Yellow #5.
Simply put, according to the FDA, drugs are defined
as “products that cure, treat, mitigate or prevent dis-
ease, or that effect the structure or function of the
human body.” The identification of a particular agent as
fitting these categories changes the process in the
United States of FDA oversight. The cosmetic industry
is continually on the edge of this area, making subtle
claims of certain additives (Retinol, for example) that
purport to effect the structure of the human body. In the
case of Retinol, which has been shown to penetrate the
epidermis,
2
this interpretation is that regular usage will
provide antioxidant properties for the skin, retarding
the aging process. Such claims should initiate a careful
review by the FDA. Even when such claims (often
verbal or made in newspapers, rather than distributed
through scientific channels) are made, that they rarely
change the FDA requirements on such products. This
usually has not been the case because the volume of
new products exceeds the FDA’s ability to review
and/or regulate. The FDA does not accept or define the
term “cosmeceutical”, whereas nearly universally
around the world this has become the new phrase
(catch-word) for the millennium change in cosmetics to
retard aging. Kligman offers this guidance in a derma-
tologist’s evaluation of new cosmeceuticals:
with the dramatic increase in advances in cos-
metic chemistry, has been one of increasing in-
terface with dermatologists. The change especially in
dermatology has found less emphasis on medical der-
matology and growth in the areas of cosmetic derma-
tology and dermatologic surgery. With this, the derma-
tologist has had to become more aware of principles
and products in the field of cosmetics. The use of these
newer products as an adjunct to the practice of derma-
tology coincides nicely with recent international con-
gresses, whose theme has been “healthy skin for all”
and variations on such.
Perhaps the major body for the oversight of this
growth remains the U.S. Food and Drug Administra-
tion (FDA), which for many parts of the world provides
the assurance of safety and quality for various foods,
drugs, and cosmetics. The mandate for much current
regulation and oversight began in 1938 with the Food,
Drug, and Cosmetic Act, which placed active oversight
on various drugs and cosmetics and was further mod-
ified in 1960 by the Delaney Amendment, which fo-
cused on the growing awareness of carcinogenic poten-
tial of various agents, topical and systemic.
1
Since the
radium scare of the 1920s and 1930s, the increasing use
of synthetic materials has focused on delayed long-term
potential cancer risks and health hazards. More re-
cently, such agents as Dioxin, Agent Orange, and cer-
tain other fungicides and pesticides have seemingly
justified this new role of the FDA. Of particular confu-
sion at the present time are certain dyes—FD&C Red #3,
FD&C Yellow #5, hair dyes—and other agents that are
essential in the cosmetic and “cosmeceutical” practice.
The variability of interpretation of safety still confounds
easy interpretation of the administration’s role in the
approval of new uses, particularly in the cosmeceutical
area. At the present time, FD&C Red #3 has been
1. Can the active ingredient penetrate the stratum cor-
neum and be delivered in sufficient concentrations to
its intended target in the skin over a time course
consistent with its mechanism of action?
2. Does the active ingredient have a specific biochemi-
cal mechanisms of action in the target cell or tissue in
human skin?
3. Are there published, peer-reviewed, double blinded,
placebo-controlled,
statistically
significant
clinical
trails to substantiate the efficacy claims?
3
Over the last 30 years, the increasing use of “natural”
products and the return to alternative medicine, further
complicates the issues.
4
“Natural products” superfi-
cially would seem to be synonymous with “safe” prod-
ucts. Specific definition of “natural” in pharmaceuticals
is as nebulous as “organic” in foods. Many poisonous
From the Department of Dermatology, Tulane University School of
Medicine, New Orleans, Louisiana, USA.
Address correspondence to Larry E. Millikan, MD, Department of Der-
matology, Tulane University School of Medicine, New Orleans, LA 70112
USA.
E-mail address: millikan@tmcpop.tmc.tulane.edu
© 2001 by Elsevier Science Inc. All rights reserved.
0738-081X/01/$–see front matter
655 Avenue of the Americas, New York, NY 10010
PII S0738-081X(01)00195-X
372
Clinics in Dermatology
Y
2001;19:371–374
MILLIKAN
Table 1.
Ingredients Prohibited or Restricted by Regulation
Regulations specifically prohibit or restrict the use of the following ingredients in cosmetics. For complete details, refer to the relevant
regulations (21 CFR, Parts 250.250 and 700.11 through 700.23):
Hexachlorophene
Because of its neurotoxic effect and ability to penetrate human skin, hexachlorophene (HCP) may be used
only when an alternative preservative has not been shown to be as effective. The HCP concentration of
the cosmetic may not exceed 0.1%, and it may not be used in cosmetics that in normal use may be
applied to mucous membranes, such as the lips.
Mercury compounds
Mercury compounds are readily absorbed through the skin on topical application and tend to accumulate
in the body. They may cause allergic reactions, skin irritation, or neurotoxic manifestations. The use of
mercury compounds as cosmetic ingredients is limited to eye area cosmetics at concentrations not
exceeding 65 parts per million (0.0065%) of mercury calculated as the metal (about 100 ppm or 0.01%
phenylmercuric acetate or nitrate) and provided no other effective and safe preservative is available for
use. All other cosmetics containing mercury are adulterated and subject to regulatory action unless it
occurs in a trace amount of less than 1 part per million (0.0001%) calculated as the metal and its
presence is unavoidable under conditions of good manufacturing practice.
Chlorofluorocarbon propellants
The use of chlorofluorocarbon propellants (fully halogenated chlorofluoroalkanes) in cosmetic aerosol
products intended for domestic consumption is prohibited.
Bithionol
Because it may cause photo-contact sensitization.
Halogenated salicylanilides (di-,
tri-, metabromsalan, and
tetrachlorosalicylanilide)
Because they may cause photocontact sensitization.
Chloroform
Because of its animal carcinogenicity and likely hazard to human health.
Vinyl chloride
As an ingredient of aerosol products, because of its carcinogenicity.
Zirconium-containing complexes
In aerosol cosmetic products, because of their toxic effect on lungs, including the formation of
granulomas.
Methylene chloride
Because of its animal carcinogenicity and likely hazard to human health.
Adapted from: U.S. Food and Drug Administration Center for Food Safety and Applied Nutrition Office of Cosmetics Fact Sheet, “Prohibited Ingredients and Related Safety
Issues,” http://vm.cfsan.fda.gov/
;
dms/cos-210.html.
alkaloids, for instance, are natural products. So “safe”
and/or “effective” are not synonymous with such an
appellation.
The recent world congresses of the International
Academy of Cosmetic Dermatology, and the growth of
cosmetic dermatology societies in most regions around
the world, have highlighted the increase in dermatolo-
gists’ involvement in these areas. It is pertinent for
dermatologists to be aware of the FDA’s position in that
an increasing number of dermatologists are compound-
ing products purported to function with antioxidant
properties to retard ageing or improve cosmesis for
patients. Traditionally, the role of the physician, after
determining the root cause of the medical condition and
then preparing appropriate treatments using a com-
pounding pharmacist, has now diminished to the point
where compounding is nearly all the time the domain
of dermatologists. Extension of simple compounding of
various products to the area of cosmetics or cosmeceu-
ticals has been natural, and a growth area for many
dermatologists in practice. The limitations of the role of
the FDA is this area is clearly described in the FDA
cosmetics fact sheet.
5
While the FDA does not have the
authority to approve cosmetic products’ ingredients,
except the above-mentioned color additives, there are
several federal regulations prohibiting certain ingredi-
ents found in Title XXI of the Code of Federal Regula-
tions, Parts 250.250 and 700.11 through 700.23. The
agents that are specifically prohibited or usage re-
stricted are seen in Table 1. It is worthwhile to note that
the current aggressive usage of antioxidants does not
involve any of these agents that are regulated by the
FDA, but has highlighted the problem of occasional
contact dermatitis with some of these natural products
compounded even by large cosmetic or pharmaceutical
companies. The most recent example has been vitamin
E, which created a significant increase in contact der-
matitis in the 1970s when it was added to many cos-
metic and deodorant products, much in the same man-
ner that retinol is today. Additionally, the CTFA
(Cosmetic Toiletry and Fragrance Association) has es-
tablished the Cosmetic Ingredient Review (CIR) expert
panel, which has listed additional agents unsafe, in-
cluding the antioxidant P-hydroxyanisole, which can
cause skin pigmentation, and several other agents (see
Table 2) that have potential for carcinogenicity. As one
can see, the regulation or prohibition in the cosmetic
and cosmeceutical world, as listed on Tables 1 and 2,
represents a very small number of products.
Regulation is further complicated by modification of
cosmetics and cosmeceuticals with colors for masking
of consumer acceptance (Table 3) and other agents to
prevent contamination. Contamination can occur as a
by-product of the manufacturing process, resulting in
agents formed, such as nitrosamine and dioxane, that
have potential health risks, Contamination can occur
with the repeated use of topical agents on the skin, and
oxidation of the product or microbial contamination can
then lead to allergenicity, carcinogenicity, or infection.
The prevention of oxidation and microbial contamina-
Clinics in Dermatology
Y
2001;19:371–374
373
COSMETOLOGY
Table 2.
Unsafe Ingredients in Cosmetics
Chloroacetamide (a preservative)
Because of sensitization (development of allergic reactions).
Ethoxyethanol and Ethoxyethanol Acetate (a solvent)
Because of reproductive and developmental toxicity.
HC Blue No. 1 (a hair coloring ingredient)
Because of possible carcinogenicity.
p-Hydroxyanisole (an antioxidant)
Because of skin depigmentation.
4-Methoxy-m-Phenylenediamine, 4-Methoxy-m-
Phenylenediamine HCl, and 4-Methoxy-m-
Phenylenediamine Sulfate (hair dye ingredients)
Because of possible of carcinogenicity.
Pyrocatechol (used in hair dyes and skin care preparations)
Because of carcinogenic and co-carcinogenic potential (CIR describes this
substance as unsafe for leave-on products and considers available data
insufficient to assure safety for use in hair dyes).
Adapted from: 1999 CIR Annual Report, cited by U.S. Food and Drug Administration Center for Food Safety and Applied Nutrition Office of Cosmetics Fact Sheet, “Prohibited
Ingredients and Related Safety Issues,” http://vm.cfsan.fda.gov/
;
dms/cos-210.html.
tion is often the area where cosmetic chemists add
various antioxidants and other preservatives to the
product, some of which until recently have not claimed
benefit other than prevention of degradation of the
product by rancidification and other means. This would
improve the stability and shelf life of the products, as
well as help retard microbial contamination. One has
only to look at the commonly used True-Test series of
contact dermatitis patch tests to see the significance of
many of these additives in the area of contact dermatitis
(see Table 4).
Further, over the years, the antimicrobial aspects
of certain additives led to widespread use and aller-
genicity or photo-allergenicity and other forms of tox-
icity, which ultimately resulted in these agents, (e.g.,
hexachlorophene, bithionol, halogenated salicylani-
lides, and salicylanilides) being banned from usage (see
Table 1).
desirable for the consumer, for instance in perfumes
such as Shalimar with the photosensitizer oil of berga-
mot. Fragrance sensitivity is a challenge to the derma-
tologist specializing in sensitivity to drugs and cosmet-
ics.
7
While the patient with sensitive skin is advised to
seek certain key identifiers, these have no official rec-
ognition or labeling requirements, and therefore may
vary from product to product but nonetheless remain
the only way to guide our patients for safety’s sake. It is
worthwhile noting that a label of “fragrance-free” iden-
tifies products that seem to lack any actual fragrance,
but indeed may have the masking fragrances to get rid
of unpleasant odors in the product as it is compounded.
Similarly, hypoallergenic products do not guarantee
total freedom from allergic reactions, but are certainly
important in the allergic patient’s awareness if cosmet-
ics are deemed important in spite of a high level of
sensitivity. For the acne prone patients, noncomedo-
genic similarly has validity but no official status, and
sometimes the testing with rabbit ears is the hallmark
for this claim but not always.
Cosmetic products in nail care represent another area
of cosmeceuticals that are a significant cause of cutane-
ous problems that are outside of the FDA’s close scruit-
ingy.
8
Other Definitions
Fragrances/Fragrance Free
The last area of concern, which also is out of the realm
of usual oversight in most countries, has been the prob-
lem of sensitivity to fragrances.
6
Fragrances may indeed
be merely masking fragrances, while others are very
Table 3. Color Additive Terms
Allura Red AC
The common name for uncertified FD&C Red No. 40
Certifiable Color Additives
Colors manufactured from petroleum and coal sources listed in the Code of Federal Regulations for use
in foods, drugs, cosmetics, and medical devices
Coal-Tar Dyes
Coloring agents originally derived from coal sources
D&C
A prefix designating that a certifiable color has been approved for use in drugs and cosmetics
Erythrosine
The common name of FD&C Red No. 3
Exempt Color Additives
Colors derived primarily from plant, animal, and mineral (other than coal and petroleum) sources that
are exempt from FDA certification
Ext. D&C
A prefix designating that a certifiable color may be used only in externally applied drugs and cosmetics
FD&C
A prefix designating that a certified color can be used in foods, drugs or cosmetics
Indigotine
The common name for uncertified FD&C Blue No. 2
Lakes
Water-insoluble forms of certifiable colors that are more stable than straight dyes and ideal for product
in which leaching of the color is undesirable (coated tablets and hard candies, for example)
Permanent Listing
A list of allowable colors determined by tests to be safe for human consumption under regulatory
provisions
Adapted from: U.S. Food and Drug Administration Center for Food Safety and Applied Nutrition Office of Cosmetics Fact Sheet, “Color Additives,” http://vm.cfsan.fda.gov/
;
dms/cos-221.html.
374
Clinics in Dermatology
Y
2001;19:371–374
MILLIKAN
Table 4.
Allergen Components from True Test Kit
tency, and biologic additives can cause problems for the
patient.
The last, and most important definition/dictum re-
mains caveat emptor!
Allergen Components
on T.R.U.E. TEST Panel 1.1
Allergen Components on
T.R.U.E. TEST Panel 2.1
1. Nickel sulfate
13. p-tert-Butylphenol
formaldehyde resin
References
1. Cosmeceutical. U.S. Food and Drug Administration, Cen-
ter for Food Safety and Applied Nutrition, Office of Cos-
metics and Colors Fact Sheet. Available at http://vm.cfsan.
fda.gov/
2. Wool alcohols
14. Epoxy resin
3. Neomycin sulfate
15. Carba mix
4. Potassium dichromate
16. Black rubber mix
5. Caine mix
17. Cl
1
Me
2
Isothiazolinone
6. Fragrance mix
18. Quaternium-15
dms/cos-217.html.
2. Duell EA, Kang S, Voorhees JJ. Unoccluded retinol pene-
trates human skin in vivo more effectively than unoc-
cluded retinyl palmitate or retinoic acid. J Invest Dermatol
1997;109:301–5.
3. Kligman D. Cosmeceuticals. Dermatol Clin 2000;18:609 –15.
4. Bigby M. Snake oil for the 21st century. Arch Dermatol
1998;134:1512– 4.
5. Stehlin D. Cosmetic safety: More complex than at first
blush.
;
7. Colophony
19. Mercaptobenzothiazole
8. Paraben mix
20. p-Phenylenediamine
9. Negative control
21. Formaldehyde
10. Balsam of Peru
22. Mercapto mix
11. Ethylenediamine
dihydrochloride
23. Thimerosal
12. Cobalt dichloride
24. Thiuram mix
Natural
It also should be noted that, as mentioned previously,
natural products are not synonymous with safety, and
indeed, being the opposite of synthetically produced
products, they may have a greater variability in content.
Pure chemical compounding can significantly minimize
contamination, whereas making products from natural
sources can never totally have batch-to-batch consis-
FDA
Consumer,
November
1991.
Available
at
dms/cos-safe.html
6. Scheman A. Adverse reactions to cosmetic ingredients.
Dermatol Clin 2000;18:685–98.
7. Lunder T, Kansky A. Increase in contact allergy to fra-
grances: patch-test results 1989 –1998. Contact Dermatitis
2000;43:107–9.
8. Draelos ZD. Nail cosmetic issues. Dermatol Clin 2000;18:
675– 83.
http://vm.cfsan.fda.gov/
;
zanotowane.pl doc.pisz.pl pdf.pisz.pl hannaeva.xlx.pl
Cosmeceuticals: Definitions and
Regulations
LARRY E. MILLIKAN, MD
T
he growth of the cosmetic industry, together
banned for provisional usages, and there has been ex-
panded oversight on tartrazine, or FD&C Yellow #5.
Simply put, according to the FDA, drugs are defined
as “products that cure, treat, mitigate or prevent dis-
ease, or that effect the structure or function of the
human body.” The identification of a particular agent as
fitting these categories changes the process in the
United States of FDA oversight. The cosmetic industry
is continually on the edge of this area, making subtle
claims of certain additives (Retinol, for example) that
purport to effect the structure of the human body. In the
case of Retinol, which has been shown to penetrate the
epidermis,
2
this interpretation is that regular usage will
provide antioxidant properties for the skin, retarding
the aging process. Such claims should initiate a careful
review by the FDA. Even when such claims (often
verbal or made in newspapers, rather than distributed
through scientific channels) are made, that they rarely
change the FDA requirements on such products. This
usually has not been the case because the volume of
new products exceeds the FDA’s ability to review
and/or regulate. The FDA does not accept or define the
term “cosmeceutical”, whereas nearly universally
around the world this has become the new phrase
(catch-word) for the millennium change in cosmetics to
retard aging. Kligman offers this guidance in a derma-
tologist’s evaluation of new cosmeceuticals:
with the dramatic increase in advances in cos-
metic chemistry, has been one of increasing in-
terface with dermatologists. The change especially in
dermatology has found less emphasis on medical der-
matology and growth in the areas of cosmetic derma-
tology and dermatologic surgery. With this, the derma-
tologist has had to become more aware of principles
and products in the field of cosmetics. The use of these
newer products as an adjunct to the practice of derma-
tology coincides nicely with recent international con-
gresses, whose theme has been “healthy skin for all”
and variations on such.
Perhaps the major body for the oversight of this
growth remains the U.S. Food and Drug Administra-
tion (FDA), which for many parts of the world provides
the assurance of safety and quality for various foods,
drugs, and cosmetics. The mandate for much current
regulation and oversight began in 1938 with the Food,
Drug, and Cosmetic Act, which placed active oversight
on various drugs and cosmetics and was further mod-
ified in 1960 by the Delaney Amendment, which fo-
cused on the growing awareness of carcinogenic poten-
tial of various agents, topical and systemic.
1
Since the
radium scare of the 1920s and 1930s, the increasing use
of synthetic materials has focused on delayed long-term
potential cancer risks and health hazards. More re-
cently, such agents as Dioxin, Agent Orange, and cer-
tain other fungicides and pesticides have seemingly
justified this new role of the FDA. Of particular confu-
sion at the present time are certain dyes—FD&C Red #3,
FD&C Yellow #5, hair dyes—and other agents that are
essential in the cosmetic and “cosmeceutical” practice.
The variability of interpretation of safety still confounds
easy interpretation of the administration’s role in the
approval of new uses, particularly in the cosmeceutical
area. At the present time, FD&C Red #3 has been
1. Can the active ingredient penetrate the stratum cor-
neum and be delivered in sufficient concentrations to
its intended target in the skin over a time course
consistent with its mechanism of action?
2. Does the active ingredient have a specific biochemi-
cal mechanisms of action in the target cell or tissue in
human skin?
3. Are there published, peer-reviewed, double blinded,
placebo-controlled,
statistically
significant
clinical
trails to substantiate the efficacy claims?
3
Over the last 30 years, the increasing use of “natural”
products and the return to alternative medicine, further
complicates the issues.
4
“Natural products” superfi-
cially would seem to be synonymous with “safe” prod-
ucts. Specific definition of “natural” in pharmaceuticals
is as nebulous as “organic” in foods. Many poisonous
From the Department of Dermatology, Tulane University School of
Medicine, New Orleans, Louisiana, USA.
Address correspondence to Larry E. Millikan, MD, Department of Der-
matology, Tulane University School of Medicine, New Orleans, LA 70112
USA.
E-mail address: millikan@tmcpop.tmc.tulane.edu
© 2001 by Elsevier Science Inc. All rights reserved.
0738-081X/01/$–see front matter
655 Avenue of the Americas, New York, NY 10010
PII S0738-081X(01)00195-X
372
Clinics in Dermatology
Y
2001;19:371–374
MILLIKAN
Table 1.
Ingredients Prohibited or Restricted by Regulation
Regulations specifically prohibit or restrict the use of the following ingredients in cosmetics. For complete details, refer to the relevant
regulations (21 CFR, Parts 250.250 and 700.11 through 700.23):
Hexachlorophene
Because of its neurotoxic effect and ability to penetrate human skin, hexachlorophene (HCP) may be used
only when an alternative preservative has not been shown to be as effective. The HCP concentration of
the cosmetic may not exceed 0.1%, and it may not be used in cosmetics that in normal use may be
applied to mucous membranes, such as the lips.
Mercury compounds
Mercury compounds are readily absorbed through the skin on topical application and tend to accumulate
in the body. They may cause allergic reactions, skin irritation, or neurotoxic manifestations. The use of
mercury compounds as cosmetic ingredients is limited to eye area cosmetics at concentrations not
exceeding 65 parts per million (0.0065%) of mercury calculated as the metal (about 100 ppm or 0.01%
phenylmercuric acetate or nitrate) and provided no other effective and safe preservative is available for
use. All other cosmetics containing mercury are adulterated and subject to regulatory action unless it
occurs in a trace amount of less than 1 part per million (0.0001%) calculated as the metal and its
presence is unavoidable under conditions of good manufacturing practice.
Chlorofluorocarbon propellants
The use of chlorofluorocarbon propellants (fully halogenated chlorofluoroalkanes) in cosmetic aerosol
products intended for domestic consumption is prohibited.
Bithionol
Because it may cause photo-contact sensitization.
Halogenated salicylanilides (di-,
tri-, metabromsalan, and
tetrachlorosalicylanilide)
Because they may cause photocontact sensitization.
Chloroform
Because of its animal carcinogenicity and likely hazard to human health.
Vinyl chloride
As an ingredient of aerosol products, because of its carcinogenicity.
Zirconium-containing complexes
In aerosol cosmetic products, because of their toxic effect on lungs, including the formation of
granulomas.
Methylene chloride
Because of its animal carcinogenicity and likely hazard to human health.
Adapted from: U.S. Food and Drug Administration Center for Food Safety and Applied Nutrition Office of Cosmetics Fact Sheet, “Prohibited Ingredients and Related Safety
Issues,” http://vm.cfsan.fda.gov/
;
dms/cos-210.html.
alkaloids, for instance, are natural products. So “safe”
and/or “effective” are not synonymous with such an
appellation.
The recent world congresses of the International
Academy of Cosmetic Dermatology, and the growth of
cosmetic dermatology societies in most regions around
the world, have highlighted the increase in dermatolo-
gists’ involvement in these areas. It is pertinent for
dermatologists to be aware of the FDA’s position in that
an increasing number of dermatologists are compound-
ing products purported to function with antioxidant
properties to retard ageing or improve cosmesis for
patients. Traditionally, the role of the physician, after
determining the root cause of the medical condition and
then preparing appropriate treatments using a com-
pounding pharmacist, has now diminished to the point
where compounding is nearly all the time the domain
of dermatologists. Extension of simple compounding of
various products to the area of cosmetics or cosmeceu-
ticals has been natural, and a growth area for many
dermatologists in practice. The limitations of the role of
the FDA is this area is clearly described in the FDA
cosmetics fact sheet.
5
While the FDA does not have the
authority to approve cosmetic products’ ingredients,
except the above-mentioned color additives, there are
several federal regulations prohibiting certain ingredi-
ents found in Title XXI of the Code of Federal Regula-
tions, Parts 250.250 and 700.11 through 700.23. The
agents that are specifically prohibited or usage re-
stricted are seen in Table 1. It is worthwhile to note that
the current aggressive usage of antioxidants does not
involve any of these agents that are regulated by the
FDA, but has highlighted the problem of occasional
contact dermatitis with some of these natural products
compounded even by large cosmetic or pharmaceutical
companies. The most recent example has been vitamin
E, which created a significant increase in contact der-
matitis in the 1970s when it was added to many cos-
metic and deodorant products, much in the same man-
ner that retinol is today. Additionally, the CTFA
(Cosmetic Toiletry and Fragrance Association) has es-
tablished the Cosmetic Ingredient Review (CIR) expert
panel, which has listed additional agents unsafe, in-
cluding the antioxidant P-hydroxyanisole, which can
cause skin pigmentation, and several other agents (see
Table 2) that have potential for carcinogenicity. As one
can see, the regulation or prohibition in the cosmetic
and cosmeceutical world, as listed on Tables 1 and 2,
represents a very small number of products.
Regulation is further complicated by modification of
cosmetics and cosmeceuticals with colors for masking
of consumer acceptance (Table 3) and other agents to
prevent contamination. Contamination can occur as a
by-product of the manufacturing process, resulting in
agents formed, such as nitrosamine and dioxane, that
have potential health risks, Contamination can occur
with the repeated use of topical agents on the skin, and
oxidation of the product or microbial contamination can
then lead to allergenicity, carcinogenicity, or infection.
The prevention of oxidation and microbial contamina-
Clinics in Dermatology
Y
2001;19:371–374
373
COSMETOLOGY
Table 2.
Unsafe Ingredients in Cosmetics
Chloroacetamide (a preservative)
Because of sensitization (development of allergic reactions).
Ethoxyethanol and Ethoxyethanol Acetate (a solvent)
Because of reproductive and developmental toxicity.
HC Blue No. 1 (a hair coloring ingredient)
Because of possible carcinogenicity.
p-Hydroxyanisole (an antioxidant)
Because of skin depigmentation.
4-Methoxy-m-Phenylenediamine, 4-Methoxy-m-
Phenylenediamine HCl, and 4-Methoxy-m-
Phenylenediamine Sulfate (hair dye ingredients)
Because of possible of carcinogenicity.
Pyrocatechol (used in hair dyes and skin care preparations)
Because of carcinogenic and co-carcinogenic potential (CIR describes this
substance as unsafe for leave-on products and considers available data
insufficient to assure safety for use in hair dyes).
Adapted from: 1999 CIR Annual Report, cited by U.S. Food and Drug Administration Center for Food Safety and Applied Nutrition Office of Cosmetics Fact Sheet, “Prohibited
Ingredients and Related Safety Issues,” http://vm.cfsan.fda.gov/
;
dms/cos-210.html.
tion is often the area where cosmetic chemists add
various antioxidants and other preservatives to the
product, some of which until recently have not claimed
benefit other than prevention of degradation of the
product by rancidification and other means. This would
improve the stability and shelf life of the products, as
well as help retard microbial contamination. One has
only to look at the commonly used True-Test series of
contact dermatitis patch tests to see the significance of
many of these additives in the area of contact dermatitis
(see Table 4).
Further, over the years, the antimicrobial aspects
of certain additives led to widespread use and aller-
genicity or photo-allergenicity and other forms of tox-
icity, which ultimately resulted in these agents, (e.g.,
hexachlorophene, bithionol, halogenated salicylani-
lides, and salicylanilides) being banned from usage (see
Table 1).
desirable for the consumer, for instance in perfumes
such as Shalimar with the photosensitizer oil of berga-
mot. Fragrance sensitivity is a challenge to the derma-
tologist specializing in sensitivity to drugs and cosmet-
ics.
7
While the patient with sensitive skin is advised to
seek certain key identifiers, these have no official rec-
ognition or labeling requirements, and therefore may
vary from product to product but nonetheless remain
the only way to guide our patients for safety’s sake. It is
worthwhile noting that a label of “fragrance-free” iden-
tifies products that seem to lack any actual fragrance,
but indeed may have the masking fragrances to get rid
of unpleasant odors in the product as it is compounded.
Similarly, hypoallergenic products do not guarantee
total freedom from allergic reactions, but are certainly
important in the allergic patient’s awareness if cosmet-
ics are deemed important in spite of a high level of
sensitivity. For the acne prone patients, noncomedo-
genic similarly has validity but no official status, and
sometimes the testing with rabbit ears is the hallmark
for this claim but not always.
Cosmetic products in nail care represent another area
of cosmeceuticals that are a significant cause of cutane-
ous problems that are outside of the FDA’s close scruit-
ingy.
8
Other Definitions
Fragrances/Fragrance Free
The last area of concern, which also is out of the realm
of usual oversight in most countries, has been the prob-
lem of sensitivity to fragrances.
6
Fragrances may indeed
be merely masking fragrances, while others are very
Table 3. Color Additive Terms
Allura Red AC
The common name for uncertified FD&C Red No. 40
Certifiable Color Additives
Colors manufactured from petroleum and coal sources listed in the Code of Federal Regulations for use
in foods, drugs, cosmetics, and medical devices
Coal-Tar Dyes
Coloring agents originally derived from coal sources
D&C
A prefix designating that a certifiable color has been approved for use in drugs and cosmetics
Erythrosine
The common name of FD&C Red No. 3
Exempt Color Additives
Colors derived primarily from plant, animal, and mineral (other than coal and petroleum) sources that
are exempt from FDA certification
Ext. D&C
A prefix designating that a certifiable color may be used only in externally applied drugs and cosmetics
FD&C
A prefix designating that a certified color can be used in foods, drugs or cosmetics
Indigotine
The common name for uncertified FD&C Blue No. 2
Lakes
Water-insoluble forms of certifiable colors that are more stable than straight dyes and ideal for product
in which leaching of the color is undesirable (coated tablets and hard candies, for example)
Permanent Listing
A list of allowable colors determined by tests to be safe for human consumption under regulatory
provisions
Adapted from: U.S. Food and Drug Administration Center for Food Safety and Applied Nutrition Office of Cosmetics Fact Sheet, “Color Additives,” http://vm.cfsan.fda.gov/
;
dms/cos-221.html.
374
Clinics in Dermatology
Y
2001;19:371–374
MILLIKAN
Table 4.
Allergen Components from True Test Kit
tency, and biologic additives can cause problems for the
patient.
The last, and most important definition/dictum re-
mains caveat emptor!
Allergen Components
on T.R.U.E. TEST Panel 1.1
Allergen Components on
T.R.U.E. TEST Panel 2.1
1. Nickel sulfate
13. p-tert-Butylphenol
formaldehyde resin
References
1. Cosmeceutical. U.S. Food and Drug Administration, Cen-
ter for Food Safety and Applied Nutrition, Office of Cos-
metics and Colors Fact Sheet. Available at http://vm.cfsan.
fda.gov/
2. Wool alcohols
14. Epoxy resin
3. Neomycin sulfate
15. Carba mix
4. Potassium dichromate
16. Black rubber mix
5. Caine mix
17. Cl
1
Me
2
Isothiazolinone
6. Fragrance mix
18. Quaternium-15
dms/cos-217.html.
2. Duell EA, Kang S, Voorhees JJ. Unoccluded retinol pene-
trates human skin in vivo more effectively than unoc-
cluded retinyl palmitate or retinoic acid. J Invest Dermatol
1997;109:301–5.
3. Kligman D. Cosmeceuticals. Dermatol Clin 2000;18:609 –15.
4. Bigby M. Snake oil for the 21st century. Arch Dermatol
1998;134:1512– 4.
5. Stehlin D. Cosmetic safety: More complex than at first
blush.
;
7. Colophony
19. Mercaptobenzothiazole
8. Paraben mix
20. p-Phenylenediamine
9. Negative control
21. Formaldehyde
10. Balsam of Peru
22. Mercapto mix
11. Ethylenediamine
dihydrochloride
23. Thimerosal
12. Cobalt dichloride
24. Thiuram mix
Natural
It also should be noted that, as mentioned previously,
natural products are not synonymous with safety, and
indeed, being the opposite of synthetically produced
products, they may have a greater variability in content.
Pure chemical compounding can significantly minimize
contamination, whereas making products from natural
sources can never totally have batch-to-batch consis-
FDA
Consumer,
November
1991.
Available
at
dms/cos-safe.html
6. Scheman A. Adverse reactions to cosmetic ingredients.
Dermatol Clin 2000;18:685–98.
7. Lunder T, Kansky A. Increase in contact allergy to fra-
grances: patch-test results 1989 –1998. Contact Dermatitis
2000;43:107–9.
8. Draelos ZD. Nail cosmetic issues. Dermatol Clin 2000;18:
675– 83.
http://vm.cfsan.fda.gov/
;