Electrokinetic Analysis Reveals Common Conditioner Ingredient Interactions With Human Hair

This study used electrokinetic analysis to examine how cationic surfactants interact with human hair, focusing on their structure, concentration, and the extent of hair damage. It found that longer-chain surfactants like BTMC showed better deposition and conditioning due to stronger van der Waals interactions, while bulky groups in STAC hindered deposition. BTMC and BTMS were more effective than CTAC and STAC, with BTMC significantly reducing combing forces and improving manageability. However, conditioners did not reverse oxidative damage, indicating they enhance manageability without repairing structural damage. The study underscores the importance of surfactant molecular structure in improving hair care formulations, providing insights for optimizing conditioners to enhance user experience and hair health.