Effects of Withania Somnifera Root Extract Serum Application on Hair Health in Healthy Adults: A Prospective, Double-Blind, Randomized, Parallel, Placebo-Controlled Study

The study on Withania somnifera (Ashwagandha) root extract serum involved 68 healthy adults over 75 days and demonstrated significant improvements in hair health metrics, including increased hair density, growth, and thickness, compared to a placebo. The Ashwagandha group showed a 7.3/cm² increase in hair density, 21.76 μm/day in hair growth, and 1.80 μm in hair thickness. The anagen phase increased, and the telogen phase decreased significantly, with a greater reduction in hair loss and improved quality of life scores. No adverse events were reported, suggesting the serum is well-tolerated. The study concludes that Ashwagandha root extract serum is a safe and effective treatment for hair loss, though larger, long-term studies are needed to confirm these findings.