Starch hydroxypropyltrimonium chlorides

Starch hydroxypropyltrimonium chloride is a cationic polymeric, quaternary trimethylammonium salt of starch, which is preferably used in many personal care products, e.g. in shampoos, because of its film-forming and antistatic properties.

Starch hydroxypropyltrimonium chloride has an emulsifying effect and improves the resistance of an emulsion and its shelf life as well as the viscosity of cosmetics.

The substance makes the hair easy to comb, smooth, soft and shiny and gives it volume, suppleness and shine.

Environmental influences and oxidative hair treatments often result in poorer combability of dry and wet hair. Furthermore, the shine and moisture balance are negatively influenced by the attacked outer structure of the keratinic fibres. Conventional hair care products therefore contain conditioning polymers like cationic polymers or silicone oils (cave: environmental pollution). Conditioning polymers, however, lead to a layer formation on the hair shaft and thus often to a weighting of the hair. This causes problems in hairstyling, especially for people with fine hair (low volume, little hold and fullness of the hairstyle). Hair conditioned with Starch hydroxypropyltrimonium chloride has excellent wet combability and increased volume when dry.

Gao T (2007) Evaluation of hair humidity resistance/moisturization from hair elasticity. J Cosmet Sci 58:393-404.