2 citations
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January 2004 in “PubMed” This study concluded that Polyquaternium-10 conditioner softens the surface of the scale face on hair fibers.
October 2025 in “International Journal of Cosmetic Science” This study found that longer-chain cationic surfactants like BTMC provided superior hair conditioning by reducing combing forces, but did not reverse oxidative hair damage, emphasizing the role of molecular structure in surfactant performance.
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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October 2007 in “PubMed” This study discusses the effects of incorporating various amino acids in hair care products, noting improvements in hair surface properties and color retention when integrated with conditioners.
March 2005 in “International Journal of Cosmetic Science” A new method helps understand hair shine and various products improve hair care.