This study developed a herbal hair dye using Phyllanthus reticulatus leaf extract combined with other natural ingredients (5:1:1:1:1 ratio) as a safe alternative to synthetic dyes. The formulation exhibited potent in vitro antimicrobial and antioxidant activities, with no added chemicals or preservatives. The product offers a natural, non-toxic hair dye option with reduced risk of irritation, burns, or other side effects compared to conventional synthetic dyes.