Skin care amphoterics

Empirical C20H39N2O6 2Na Properties Amphoteric Toxicology TSCA listed Uses Antistat, vise, control agent, surfactant, foaming agent, conditioner, foam booster/stabilizer in cosmetics, mild prods., shampoos, skin care Features High-foaming... 

As mentioned in Chapter 1, there can be thousands of molecules with polar heads and nonpolar tails, usable as surfactants. The applications are also many. Thus, the commercial anionic surfactants, recording about 50% of all surfactant production, are literally used all over the place shampoos, dishwashing detergents and washing powders are some common examples. Cationic surfactants likewise are used in hair-conditioners, fabric softeners, asphalt coating, corrosion inhibitor formulations for metal surfaces etc. The major applications of non-ionic surfactants are in the areas of food and drinks, as also pharmaceuticals and cosmetics. Amphoteric /zwitterionic surfactants have only limited applications one area is cosmetics, especially skin care products. 

Pasapane J, Ronco D. Novel amphoteric starch a naturally derived rheology modifer for skin care. Cosmet Toilet Manuf World 1996 175-179. 

Sarcosinate surfactants have been widely used in personal wash, skin care, and hair care formulations as coactives. They are particularly useful in providing a rich, stable lather, especially in the presence of sebum. Lathers produced from other anionic and amphoteric surfactants are remarkably enhanced by the addition of sarcosinates. Maximum foaming and detergency are developed in the pH range 4-8. The adsorption of sarcosinates onto the hair results in manageability and reduced static buildup. Sarcosinate surfactants are easily... 

These can be produced in the form of liquids, creams, gels, powders, granules (beads). Their main function is to produce maximum foam into running water. The basic surfactants used in bubble bath formulations eire anionic, nonionic or amphoteric together with some foam stabilizers, fragrants and suitable solubilizers. These formulations should be compatible with soap cUid they may contain other ingredients for enhancing skin care properties. 

Cationic and amphoteric derivatives of ionic siloxanes (Fig. 8) combine a high gliding ability with antistatic properties, which are particularly interesting for textile applications and personal care. Silicone betaines and silicone quats are excellent additives in hair and skin care products such as hair rinses and conditioning shampoos where they improve the compatibility, gloss, and handle of hair. They are also good antistatics. 

Uses Emulsifier, stabilizer, lubricant in hair care prods. intermediate for betaine amphoterics and amine oxides, cationic conditioners for hair and skin care prods. Properties Soft solid alkali no. 177-187 98% min. amide Foamine SO [AIzo]... 

Skin creams and lotions, which are either 0/W or W/0 - emulsions, are used for skin care after cleaning. The natural skin grease washed out must be substituted the Romans did so already. Especially dry skin is intended to remain soft and smooth. This may temporarily be secured by moisturizing, because lack of water is the reason of rough skin. So, a lot of different moisturizers are recommended for such products, e.g., oils like - fatty acid esters, ethers, silicones, branched alcohols (- Guerbet alcohols) polyols, such as - sorbitol - lanolin ->fatty alcohols, such as - cetyl alcohol and - stearyl alcohol and -+tri-glycerides, such as - sesam oil and ->cocoa butter. Other important raw materials are emulsifiers, e.g., - soaps, - glycerides, - sorbitan esters, and many other anionic, cationic and amphoteric - surfactants, and recently rediscovered natural hydroxy (di)acids, e.g., - citric acid, -+lactic acid and - tartaric acid. 

The consumer need for a milder dishwashing liquid was met in the early 1990s with the successful introduction of Palmolive Sensitive Skin and the milder positioning of Ivory LDLD. The use of nonionic and amphoteric surfactants resulted in clinically milder and less irritating products. In the last decade, however, further improving mildness was a significant objective for the major players in the LDLD market. Dawn Hand Care was the first to introduce protease, an enzyme that is claimed to soften skin by exfoliation of the top layer. 

Empirical C25H48N2O3 Properties M.w. 424.66 amphoteric Toxicology TSCA listed Uses Surfactant for cosmetics, shampoos, toiletries antistat in cosmetics foam booster/stabilizer, emollient, conditioner and thickener for skin and hair care preps., textiles Features Mild high foaming Trade Name Synonyms Incronam OP-30 f[Croda Inc http //www.croda.com-, Croda Oleochems.] Lexaine O t[lnolex http //www.inolex.com], Mackam HV [McIntyre http //www.mcintyregroup.com], Mirataine BET-O-30 [Rhodia HPCII http //www.rhodia-hpcii.com-, Costec http //www.costec.com], Schercotaine OAB f[Scher http //www.scherchem. com]... 

Amphoterics are excellent foamers and foam stabilizers under a variety of conditions. Their foamability is essentially insensitive to water hardness. Capitalizing on these properties, amphoterics were among the many specialty surfactants commercialized after World War II [2]. Since then, these surfactants have been used in personal care products because of their unsurpassed mildness and low eye-sting properties. Today, most mild skin cleansers and shampoos contain an amphoteric surfactant as a major component. 

Owing to their compatibility with cationic biocides, amphoteric and amine oxide surfactants continue to be used widely in the development and formulation of disinfectants and sanitizers for personal care, household, industrial, and institutional markets. For instance, substituted imidazoline amphoteric surfactants, in combination with didecyl dimethyl ammonium chloride, have been found to display unexpected synergistic irritation reduction compared to formulas with alkyl dimethyl benzyl ammonium chlorides [57]. Also, imidazoline derivatives and betaines are known to impart moderate cleansing without causing skin roughness, stickiness, or irritating reactions with cationic disinfectants [58], Amphoteric surfactants are also suitable for use in antimicrobial medications requiring subcutaneous, cutaneous, or mucosal membrane administration [36]. 

Amphoterics are usually used in conjunction with other surfactants (anionics or nonionics) to boost desired properties such as foam or detergency. Since the optimal surface activity of amphoterics takes place around neutral pH, they are particularly appreciated in personal care products (shower gels, foam baths, shampoos, etc.) for their mildness and skin compatibility. 

Ionic Nature Amphoteric CAS 68334-21-4 EINECS/ELINCS 269-819-0 Uses Foaming agent, detergent for shampoos, skin cleansers, personal care prods., esp. low irritancy formulations, household and industrial cleaners, textile processing... 

Uses Wetting agent, detergent, foam booster/stabiiizer, conditioner for shampoos, rinses, shaving creams, It. duty dishwashing detergents emollient, lubricant for skin acre prods. antistat in hair care prods. vise, modifier Features Produces dense, copious foam compat, with anionic, nonionic, and amphoteric surfactants... 

Chem. Descrip. Sodium cocoamphohydroxypropylsulfonate Ionic Natum Amphoteric CAS 68604-73-9 EINECS/ELINCS 271-705-0 Uses Surfactant for personal care prods. low skin irritation, low cloud pt. Pmperties Amber cl. liq. 45% min. dry solids Schercoteric MS-SF-2 (70%) [Lubrizol Advanced Materials]... 

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