A Study on the Hair Growth-Promoting Effects of Combined Treatment with Rehmannia Root Extract and Microneedle Therapy System

This study investigated the effects of Rehmannia root extract combined with microneedling therapy (MTS) on hair growth in 12 women aged 30-50 with genetic hair loss. Participants were divided into three groups: an experimental group receiving both treatments, and two control groups receiving either MTS or the extract alone. Over 8 weeks, significant improvements in hair density, hair count per follicle, and hair thickness were observed, with the experimental group showing the greatest enhancement. The findings suggest that the combination of Rehmannia root extract and MTS has synergistic effects on hair growth, indicating its potential as a novel treatment for hair health.