The fastest vetted route is to use the AJ Cosmo Labs iOS app, where you post a formulation brief describing your hair serum concept, target actives, and budget, then receive responses from pre-screened cosmetic chemists. Alternatives include reaching out through the Society of Cosmetic Chemists directory or attending indie beauty trade shows, but these paths typically take weeks longer with no vetting built in.
Read the full guide on how to find a chemist for hair serum development →