Search for formulators with specific anhydrous or leave-on skincare experience, not just general cosmetic chemistry. Ask for portfolio samples of petrolatum- or wax-based products and request references from contract manufacturers who have scaled their work. AJ Cosmo Labs lets you filter vetted chemists by speciality directly in the iOS app, so you skip the guesswork entirely.
Read the full guide on how to find a cosmetic chemist for slugging occlusive balm →