September 2023 in “International Journal of Cosmetic Science” The researchers reported that adding specific combinations of hydrolyzed proteins to silicone-free shampoo improved hair conditioning properties by reducing friction and increasing surface adsorption and penetration into hair, compared to protein-free alternatives.
5 citations
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January 1992 This study found that dimethicone with high molecular weight improved hair surface characteristics, while dimethicone copolyol and amodimethicone enhanced manageability by reducing friction or aiding styling on damaged hair.
This article reviews the roles and types of surfactants and ingredients in modern shampoos, discussing their contributions to cleansing, conditioning, and cosmetic effects, but reports no new experimental findings.
4 citations
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March 2021 in “Journal of Surfactants and Detergents” This study found that hair treated with shampoo containing water-soluble silicone demonstrated smoother sliding and better detangling, compared to shampoo with water-insoluble silicone, due to differences in conditioning film formation.
7 citations
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January 1995 This study found that using a high-viscosity, high-amine-content silicone fluid as a pretreatment can protect hair from bleaching and dyeing damage without affecting these processes.