Cosmetics cleansing preparations

Uses Surfactant, vise, builder suitable for use as additive or cosurfactant in cosmetic cleansing preparations which contain surfactants Features Dermatological compatibility no preservatives Properties Cloudy, vise, sol n. pH 11.5-12.5 (20% in 15% isopropanol) 50-53% act. 47-50% water... 

Uses Surfactant, foam control agent suitable for use as base surfactant or cosurfactant in cosmetic cleansing preparations Features Dermatological props. no preservatives... 

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... 

Forsthoff, L., 1991. Skin washing and cleansing preparations. In W. Umbach (ed.). Cosmetics and Toiletries - Development, Production and Use, New York, Ellis Horwood, pp. 58-65. 

Sweet ahnond oil is used as a laxative in doses up to 30 mL as well as a solvent for parenter-aUy administered drugs and a solvent for hemorrhoid injectable solutions. It is also used as an emollient and emulsifier for chapped hands, in lotions (both moisturizing and night skin care preparations), suntan gels, blushers, makeup bases, skin cleansing preparations, creams, and as an ointment base. It is used in cosmetic formulations in concentrations up to 50% 25% in lipstick formulations. Almond meal is used as a skin cleanser and in medicated soaps. ... 

Anionic Surfactants. In terms of general usage in cosmetic products, the anionics are by far the most widely used and are chiefly found in shampoo systems. They provide the formulator with the basic conditions for preparing these products, ie, foaming, cleansing, and solubiHty. 

From the literature, little is known about the impact of cosmetic products on skin pH. Skin possesses buffering capacity, which protects it against changes of pH. It has been shown that after application of alkaline preparation, elevated outside skin pH decreases back toward acidic values.5,14 21 Such change of pH may occur also after application of a cosmetic product. This issue is barely mentioned in case of stay-on products, like moisturizers. Rinse-off cleansing products are investigated more often, in terms of their influence on skin pH and the correlation between their pH and the irritancy potential. 

Olive oil is used widely in tbe food industry as a cooking oil and for preparing salad dressings. In cosmetics, olive oil is used as a solvent, and also as a skin and hair conditioner. Types of products containing olive oil include shampoos and hair conditioners, cleansing products, topical creams and lotions, and sun-tan products. 

Benzalkonium chloride is used mainly as a disinfectant for pre-operative skin cleansing and, surgical instruments but has sometimes been used in the treatment of ulcers, wounds and infected dermatoses. It is also present as a preservative in many cosmetic products and ophthalmic preparations. Irritation is strongly related to the concentration of the solution. 

Microcapsules are present in a number of personal care and cosmetic products (80). For example, deodorants may contain capsules that release their core contents due to moisture developed because of sweating. Microcapsules are incorporated in various cosmetic creams, powders, and personal cleansing products. Kiyama (81) summarizes the preparation and use of poy(vinyl alcohol) microcapsules in cosmetic products. Miyazawa and co-workers (82) describe the formation of agar capsules designed for cosmetic use. They note that residual glutaraldehyde in capsules with gelatin shells formed by complex coacervation may be an issue for microcapsules intended for cosmetic applications. 

A characteristic example in the field of cosmetics is the separation and determination of surfactants in shampoos, which contain various combinations of anionic, cationic, nonionic, and amphoteric surfactants. The surfactant combination is designed to influence the essential characteristics of the shampoo cleansing, foam, conditioning, and viscosity. Laurylether sulfates and alkylben-zene sulfonates are common anionic surfeictants used in shampoos to provide lather and cleansing. The only required sample preparation step is the dilution of the product to be analyzed in deionized water and subsequent membrane filtration (0.45 pm) prior to injection. Figure 10.200 illustrates the gradient... 

Their outstanding use is as extremely mild surfactants in - cosmetic preparations for skin cleansing, shampoos and children s bathing products. They are marketed in 30—40% aqueous solutions. 

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