Ask. I want to mix the formula of copper tripeptide-1 with these ingredients. Will cause skin irritation? 7732-18-5 WATER 9004-62-0 HydroxyethylCellulose 56-81-5 Glycerin E 6440-58-0 DMDM HYDANTOIN 497-76-7 Arbutin 70-18-8 Glutathione 9007-34-5 COLLAGEN 50-81-7 Vitamin C 98-92-0 Vitamin B3 68916-91-...
