Yes, several natural-origin preservatives are on the Cosmos-approved ingredient list, including glyceryl caprylate, levulinic acid, and certain fermentation-derived actives. Ethylhexylglycerin is permitted as a multifunctional ingredient at low levels in some formulations but sits in a gray area for full Cosmos certification. A cosmetic chemist familiar with Cosmos technical guidelines — the kind you can source through AJ Cosmo Labs — will help you design a system that passes both challenge testing and certification audit.
Read the full guide on cosmetic chemist who works with natural preservative systems →