Twelve-Point Scale Grading System of Scanning Electron Microscopic Examination to Investigate Subtle Changes in Damaged Hair Surface
January 2016
in “
Skin research and technology
”
TLDR The 12-point scale is better for evaluating small changes in hair condition after using hair care products.
The study aimed to establish an objective classification system for assessing hair surface condition using a 12-point scale, addressing the limitations of the subjective SEM technique. Hair samples from 500 female subjects and 180 Asian hair bunches were damaged using chemical, heat, and UV stress. The new 12-point scale provided improved discrimination of damaged cuticle layers compared to a 5-point scale. Hair surface-related parameters, such as luster and combing load, showed significant improvement after using hair care products, validating the efficacy of the new grading system. The 12-point scale was demonstrated to be a more precise and appropriate method for evaluating subtle changes in the hair shaft.
