Comparative Study of Instrumental Measurement and Sensory Evaluation Methods for the Repairing Effect of Mildly Damaged Hair Bundles

This study evaluated the effectiveness of instrumental measurement methods compared to sensory evaluations in assessing the repairing effects of hair care products on mildly damaged hair. Sixty hair bundles were divided into treatment and control groups, with the treatment group using commercial hair care essential oil and the control group using tap water. The study measured gloss and dynamic friction coefficients of hair cuticles, alongside sensory evaluations of gloss and frizz. Results showed that instrumental measurements aligned with sensory assessments, offering advantages in accuracy, convenience, and quantifiability. The study concluded that instrumental methods provide objective evidence for the efficacy of hair care products in repairing hair.