Alternative protocol for hair damage assessment and comparison of hair care treatments

Conclusions: Hair breakage is a complex phenomenon with multi-factorial effects. The present work identifies irregularities in mean diameter along hair length as the precursor for hair strength. The weakest link in hair is characterized by the presence of internal defects-preceded by surface irregularities. From root to the tip, cuticle chip-off increases and so does the Rq and tendency to break. Thus, the metric based on Rq can help compare hair care treatments in their promise to control hair damage.
Source: International Journal of Trichology - Category: Dermatology Authors: Source Type: research