Relationship Among Natures of Scalp Skin, Hair Follicle, and Hair Shaft in Young Females

This study examined the relationships between various parameters of scalp skin, hair follicles, and hair shafts in 37 young females aged 13-28. Key findings included a positive correlation between hair follicle G6PDH activity and the cross-sectional area of the hair shaft, and a negative correlation between G6PDH and the cuticle scale edge pattern, suggesting G6PDH's role in hair follicle size and structure. Additionally, a negative correlation between the frictional coefficient and TGase indicated TGase's involvement in cuticular hardening. The study found no clear relationship between scalp skin parameters and hair shaft properties. Permanent waving was shown to decrease cystine and water content at the hair tip while increasing Mg and Ca content, indicating potential hair shaft damage from such treatments.