Evaluation of Hair Damage Treated With Oxidative Hair Dye Under Influence of Conditioner Agents
TLDR Conditioners improved hair protein retention and combing ease, with some providing thermal protection.
This study evaluated the effects of conditioner agents PA1 (silanetriol and panthenol), PA2 (PEG-12 dimethicone), and PA3 (hydrolysed silk, hydrolysed milk protein, and lactose) on hair treated with oxidative hair dye. The research focused on light blond dyes applied to light brown hair, assessing mechanical properties, surface characteristics, color retention, and thermal stability. The conditioners significantly improved protein retention and combing ease without affecting tensile strength. PA1 and PA2 provided thermal protection by inhibiting hair degradation between 170°C and 270°C. PA3 did not alter colorimetric parameters, and washing affected color coordinates Da* and Db*.
