Salvianolic Acid B Reduces Oxidative Stress to Promote Hair Growth in Mice, Human Hair Follicles, and Dermal Papilla Cells

The study investigated the effects of Salvianolic Acid B (SAB), a component of traditional Chinese medicine, on hair growth in 10 mice, human hair follicles, and dermal papilla cells. The results showed that SAB promoted hair growth in mice and increased the length of human hair follicles. It also enhanced the proliferation of dermal papilla cells and reduced oxidative stress in these cells. SAB treatment resulted in significantly longer hair and increased capillary growth in mice, potentially enhancing blood flow to hair follicles. In vitro, hair follicles treated with SAB showed significantly greater growth length than the control group. SAB also increased the proportion of hair follicles in the anagen (growth) phase, delaying their transition to the catagen (resting) phase. The study suggests that SAB could be a potential treatment for androgenetic alopecia (AGA), a common form of hair loss, by counteracting oxidative stress in dermal papilla cells and preventing apoptosis. However, further research is needed to confirm these findings and understand the underlying mechanisms.