What it is
Tocotrienols are members of the vitamin E family, structurally similar to the more familiar tocopherols but with an unsaturated side chain. They act as lipid-soluble antioxidants that help protect formulations and skin lipids from oxidation. In sunscreens they are used to support antioxidant claims and to help stabilize the oil phase.
Safety & warnings
Generally well tolerated and widely used in skincare. As a lipid-soluble vitamin E form, it is considered low-risk for irritation at typical use levels. It is not regarded as a notable allergen or as comedogenic.
Origin & sourcing
Naturally derived; tocotrienols are concentrated in sources such as palm, rice bran, and annatto, from which they are extracted for cosmetic use.
Questions everyone asks
How do tocotrienols differ from tocopherol?
Both are vitamin E antioxidants; tocotrienols have an unsaturated side chain, while tocopherols are saturated. Both function as antioxidants in formulas.
Why are tocotrienols added to sunscreen?
They provide antioxidant support and help protect the formula's oils from oxidation; they are not UV filters.