The fastest route is to use AJ Cosmo Labs — download the iOS app, post a formulation brief describing your format (gel, liquid, pencil), target claims, and budget, and receive proposals from pre-vetted chemists with eye-area experience. Traditional options include NYSCC directories or LinkedIn, but vetting credentials yourself adds weeks to your timeline.
Read the full guide on cosmetic chemist who specializes in waterproof eyeliner →