The demand for natural alternatives to synthetic hair dyes has surged due to growing awareness of the adverse effects of chemical-based products on hair and scalp health. This study focuses on the formulation of a polyherbal hair dye using six botanicals known for their traditional and therapeutic benefits: henna (Lawsonia inermis), turmeric (Curcuma longa), black seed (Nigella sativa), fenugreek (Trigonella foenum-graecum), reetha (Sapindus mukorossi), and amla (Phyllanthus emblica). Each ingredient contributes uniquely to the formulation—henna provides natural coloring, turmeric offers antimicrobial properties, black seed nourishes the scalp and stimulates hair growth, fenugreek conditions the hair and reduces dandruff, reetha acts as a natural cleanser, and amla strengthens hair follicles while promoting pigmentation. The formulation was developed as a fine herbal blend to be applied topically as a paste or infusion. Preliminary evaluations indicate that the dye imparts a natural black hue, enhances shine, and improves overall hair texture without the side effects associated with chemical dyes. This polyherbal approach not only ensures hair coloring but also supports scalp health, hair nourishment, and long-term hair care.