Surfactants in cosmetics

M. Rieger, Surfactants in Cosmetics, Marcel Dekker, New York, 1985. 

Surfactants in Cosmetics, edited by Martin M. Rieger (see Volume 68)... 

Besides the alkyl ether carboxylates the amidether carboxylates are used as mild surfactants in cosmetic formulations [35-37,68,69,71,80]. As described by Meijer [68,69], the ether carboxylate mixture derived from the monoethanol-amide of coconut oil is a mild product in shampoos and showerbaths, and the stearylmonoethanolamidether carboxylate an oil-in-water emulsifier for creams and lotions. The NDELA content of these products is below the detection level of 10 ppb because of the use of monoethanolamine and the further chemical reactions after amidation. 

The reaction product with monoethanolamine acts as a thickening agent [41,101] and with alcohols as an emollient [40]. Also reaction products with amino acids and oligo- or polypeptides for use in cosmetic formulations are known [43]. Sorbitan esters from ether carboxylates are described as emulsifiers or mild surfactants in cosmetic formulations [39] and alkyl ether carboxylic acid taurides as nonirritant anionic surfactants for cosmetic cleaners in particular [44]. Using unsaturated ether carboxylates it is possible to make viscous formulations based on combinations of unsaturated and saturated ether carboxylates [111]. Highly purified alkyl ether carboxylates based on alcohol ethoxylates with low free alcohol content have also been described [112]. 

Forster. T. Principles of Emulsion Formation in Surfactants in Cosmetics, Rieger, M.M. Rhein, L.D. (Eds.), Marcel Dekker New York,... 

XI. Application of Surfactants In Cosmetics and Personal Care Products... 

XI. APPLICATION OF SURFACTANTS IN COSMETICS AND PERSONAL CARE PRODUCTS... 

Other companies have also produced condoms made from the polymer styrene-ethylene-butylene-styrene which has the advantage of being even stretchier than polyurethane, thereby reducing the risk of tearing during use. There are also condoms lubricated with a combination of silicone oil and nonoxynol-9 which acts as a spermicide. Nonoxynol-9 is also used as a surfactant in cosmetic products, but it has the ability to interfere with the acrosomal membrane which covers the head of a sperm, causing it to become paralysed, which is why nonoxynol-9 has been widely used in lubricants for condoms and es-... 

Comments sodium laurate is used as an emulsifying agent and surfactant in cosmetics. The EINECS number for sodium laurate is 211-082-4. 

Surfactants in Cosmetics, M. M. Rieger and F. D. Rhein, 2nd edition, Marcel Dekker, 2002. 

Lamepon S/ S-TR and Lamepon ST 40 Protein coconut-fatty acid condensate, potassium and TEA salts 31.5- 32.5 39.5- 40.5 Very mild secondary surfactants in cosmetic skin cleansing preparations... 

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