On 4/14/2014 Favorite Son said: If Paula B. is all about dissing harmful ingredients why would she even make a self-tanner? I haven't looked at the ingredients, but most of these products have as their main active, acetone. That is the same active ingredient in traditional nail polish remover. It is highly reactive, and has to be that way, in order to reduce your skin and turn it brown. (Or is it oxidize? My organic chemistry class was too long ago).
I'm not saying that there aren't plenty of other self-tanners out there with the same harmful ingredient. It just seems a little hypocritical to market a self-tanner when you make a living constantly criticizing products with ingredients that are far less harmful than acetone.
Maybe this is something radically different. Does anyone know?
Apparently, she is not being hypocritical because she had already rated this ingredient as "Good" in her Cosmetic Ingredient Dictionary. And from what I can tell, I don't think that this ingredient is related or similar to acetone. From her Cosmetic Ingredient Dictionary:
dihydroxyacetone
- Rating:
- Good
- Categories:
- Miscellaneous
Ingredient present in all self-tanners that affects the color of skin. Derived from sugar, it reacts with amino acids found in the top layers of skin to create a shade of brown; the effect takes place within two to six hours and it can build color depth with every reapplication. It has a long history of safe use.
Also from MedicineNet.com:
What is DHA?
According to the American Academy of Dermatology, the most effective sunless tanning products contain dihydroxyacetone (DHA) as the active ingredient. DHA is a colorless chemical (it is derived from glycerin) that interacts with the amino acids in dead skin cells to produce a brown color change. Since these dead skin cells are constantly being shed, the color change produced by DHA usually lasts about five to seven days.
DHA is not absorbed through the skin into the body and it has no known toxicity. DHA was first discovered by the Germans in the late 1920's when DHA spilled on the skin produced a brown color. DHA has been listed with the Food and Drug Administration (FDA) since 1973, and has been used in cosmetic preparations for almost 30 years.
And from the Free Dictionary:
dihydroxyacetone /di·hy·droxy·ac·e·tone/ (di?hi-drok?se-as´e-ton) the simplest ketose, a triose; it is an isomer of glyceraldehyde. D. phosphate is an intermediate in glycolysis, the glycerol phosphate shuttle, and the biosynthesis of carbohydrates and lipids.
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