Erbium: YAG Laser (2,940 nm) Treatment Stimulates Hair Growth Through Upregulating Wnt 10b and β-Catenin Expression in C57BL/6 Mice

The study demonstrated that 2,940-nm Er: YAG laser treatment significantly promoted hair growth in C57BL/6 mice by inducing the transition of hair follicles from the telogen to anagen phases, partly due to the upregulation of Wnt 10b and β-catenin expression. The laser treatment group showed higher levels of these proteins compared to the control group, suggesting a potential mechanism for the observed hair growth. The combination of laser treatment and minoxidil further shortened the transition time, indicating enhanced efficacy. These findings suggested that 2,940-nm Er: YAG laser could be a promising therapy for hair loss.