Transparent Silicone-Free Shampoo Containing Proteins With Strong Hair Conditioning Properties

The study successfully developed a transparent silicone-free shampoo containing proteins by combining mild non-sulphate surfactants, compound cationic conditioners, and natural silicone oil substitutes. The research focused on the effects of different surfactants, conditioners, thickeners, and protein types on hair performance. The results showed that using compound proteins, specifically Croquat WKP PE-LQ-WD and Gluadin® Kera-PLM, in specific mass ratios (1:9 and 1:1) at 2% total protein content, improved hair conditioning properties by increasing the contact angle and reducing friction compared to commercial silicone-free shampoos without proteins. These proteins also effectively adsorbed onto the hair surface and penetrated the hair interior. The study concludes that the combination of cationic modified hydrolyzed proteins and low molecular weight hydrolyzed proteins has a strong synergistic effect, offering significant potential for developing enhanced silicone-free hair products.