Unsafe Cosmetic Ingredients
|How Safety of Ingredients is Determined|
By US law, FDA does not have the authority to approve cosmetic products
or ingredients, except for color additives. There are only a few
ingredients which are prohibited by the FDA (see below). To ensure
safety of cosmetic ingredients the cosmetic industry in combination with
government has therefore undertaken a program to establish lists of
ingredients which are safe to use in cosmetics.
The established regulations identify cosmetic ingredients as either
safe, unsafe, or also undecided when further information is required to
establish safety. Unfortunately, there are many websites publishing
lists of "unsafe cosmetic ingredients" based on no scientific evidence,
thereby discrediting many good and acutally completely safe ingredients.
True and validated scientific evidence about the safety of both natural
and chemical cosmetic ingredients can be found only at the following
EEC Cosmetic Directives: European directives formulated by the European Union consisting of a series of principles, rules, and lists of safe and unsafe ingredients.FDA Monographs: In the USA sunscreens, antiperspirants and skin protectants are treated as OTC (over the counter) "drugs" which are reviewed by expert scientists to define the safety.
IFRA (International Fragrance Association): Association of manufacturers of fragrances. Its Technical Advisory Committee issues recommendations about the safety of various fragrances.Journal of the American College of Toxicology: Scientific journal publishing reports and studies about the safety of cosmetic and other environmental substances.
Thus, before any safety evaluation and risk
assessment of a finished product is made, the degree and route of
consumer exposure must be ascertained. This has to be done on a
case-by-case basis but the following may provide guidance. In
calculating the exposure the following factors must be considered:
Ingredients that Should be Limited in Their Use
Sodium chloride (table salt): frequently used as cheap but effective thickener in cleansing products including shampoos or shower gels. If used at too high concentrations it can cause eye and skin irritationAlpha Hydroxy Acids (AHA): skin care products containing high amounts of AHA exfoliate the skin removing wrinkles and exposing the younger skin cells beneath. As outer skin cells are exfoliated, the skin's protective barrier is removed, thus exposing premature skin to environmental damage. Therefore, use of AHA could make skin aging faster and long-term.
Bentonite: This porous clay able to absorb water is commonly used in cosmetic foundations and facial masks. At high concentrations, it may scratch the skin surface, clog pores, and dry out the skin.Formaldehyde: When combined with water, formaldehyde is used as a disinfectant, fixative, or preservative in many cosmetic products and nail care systems. Extended use at high concentrations is thought to be carcinogenic.
Lanolin: Although widely used as emollient and emulsifying agent in creams and lotions, lanolin can be irritating to the skin and can cause allergic rashes.Mineral Oil: As a derivative of crude oil used industrially as a lubricating agent, mineral oil can not penetrate the skin, but instead forms an oily film over the skin to lock in moisture and dirt hindering normal skin respiration. Nevertheless, it is widely used in baby skin care products!
Sodium Laureth Sulfate / Ammonium Laureth Sulfate (SLES, ALES): The CIR Panel has recently stated that SLES and ALES produce eye and/or skin irritation in some human test subjects. The severity of the irritation appeared to increase directly with concentration. However, SLES and ALES have not evoked adverse responses in any other toxicologic testing. It was concluded that both surfactants are safe as presently used in cosmetic products.Sodium Lauryl Sulfate / Ammonium Lauryl Sulfate (SLS, ALS): The CIR Panel has recently stated that and ALS are irritants in patch testing at concentrations of 2 % and greater. The irritation increased with ingredient concentration. In some cosmetic formulations, however, that irritant property was attenuated when SLS or ALS was combined with other surfactants. The longer SLS stayed in contact with the skin, the greater the likelihood of irritation. Thus, both SLS and ALS appear to be safe in formulations designed for discontinuous, brief use followed by thorough rinsing from the surface of the skin. In products intended for prolonged contact with skin, concentrations should not exceed 1 %.