Design, benchmark, and optimize novel proprietary formulations for scalp and hair across leave-on formats (scalp serums, masks, treatments, detanglers, leave-in conditioners, etc) and rinse-off formats (shampoos, conditioners, scalp cleansers, treatment masks, etc). Translate product and marketing briefs into technically sound formulation strategies, including prototype iterations, benchmarking against competitive products, and clear rationale for ingredient selection.