Tocopherol
Also known as Vitamin E, alpha-Tocopherol, d-alpha-Tocopherol, (+)-alpha-Tocopherol, 5,7,8-Trimethyltocol
“CIR Expert Panel says: safe as used in cosmetics.”
Tocopherol (alpha-tocopherol / vitamin E; CAS 59-02-9; C29H50O2) is a lipid-soluble antioxidant in the chromanol family, consisting of a 6-hydroxychroman ring with three methyl substituents and a phytyl side chain. In cosmetic formulations it functions primarily as an antioxidant (protecting oils and other vitamin derivatives from oxidative degradation during shelf life) and as a skin conditioning agent. The Cosmetic Ingredient Review Expert Panel originally assessed tocopherols in 2002 (Int J Toxicol 21(S3):51-116) and issued an amended final report in March 2014 that added tocotrienols and additional tocopherol esters not in the original scope. The published version is Fiume, Bergfeld, Belsito et al., Int J Toxicol 37(2 Suppl):61S-94S, 2018 (PMID 30235959). The Panel concluded that tocopherol and the 13 related tocopherols and tocotrienols assessed are safe as used in cosmetics. Tocopherol is FDA GRAS as a dietary supplement and food ingredient; in cosmetics it is commonly used at 0.1-1.0% as an antioxidant with no concentration restriction in the CIR conclusion. Contact allergy reports exist in the patch-test literature but at low prevalence, typically associated with high-concentration topical vitamin E applications to compromised skin (e.g., post-surgical scars).
Primary lipid-soluble antioxidant in cosmetic formulations — scavenges lipid peroxyl radicals, protecting plant oils, retinoids, and other labile actives from oxidative degradation during product shelf life
Synergistic with vitamin C (ascorbic acid): tocopherol is regenerated from its oxidized form by ascorbate, making the vitamin C + vitamin E + ferulic acid combination used in products like SkinCeuticals C E Ferulic chemically effective
Skin conditioning agent with emollient properties; well-tolerated on healthy skin at typical cosmetic concentrations
CIR Expert Panel concluded safe as used in cosmetics (Fiume et al., IJT 2018, PMID 30235959) — same assessment covers 13 additional tocopherol and tocotrienol ingredients
FDA Generally Recognized As Safe (GRAS) for food use; long history of safe dietary and topical use as vitamin E
- · Lipid-soluble tocopherol can oxidize during storage if not protected in the formulation; oxidized tocopherol is generally inert but loses antioxidant function
Contact dermatitis reports exist in the patch-test literature at low prevalence; most documented cases involve high concentrations applied to broken or compromised skin (surgical scars, burns) rather than leave-on cosmetic use at typical 0.1-1% levels
CIR Quick Reference Table (12/2017, revised 07/2018) - Tocopherol row: Finding 'S' (Safe), Citation 'IJT 21(S3):51-116, 2002; Final repor…
“Tocopherol | S | [no detail column entry] | IJT 21 (S3):51-116, 2002; Final report 03/2014 available from CIR”— QRT-122017revised072018.pdf, p. 133