What is the INCI name for Mixed Tocopherol 70%?
Tocopherol. Mixed Tocopherols, Vitamin E, and Vitamin E Oil are common trade names. This is the name to use on your cosmetic product ingredient list.
Is Vitamin E oil soluble or water soluble?
Oil soluble and insoluble in water. Add directly to the oil/butter phase — no pre-dissolving or emulsifying required.
Why do soap makers use Vitamin E?
Primarily as a natural antioxidant to slow oxidation and prevent DOS (dreaded orange spots), extending the shelf life of finished soap bars. It also contributes a skin-conditioning benefit to the finished bar.
Does Vitamin E act as a preservative for water-based products?
No — it is an oil-phase antioxidant only, not a broad-spectrum preservative. Water-containing products need a separate cosmetic preservative (such as Optiphen Plus, Phenoxyethanol, or Liquid Germall Plus) in addition to Vitamin E.
Can Vitamin E be used in leave-on skincare as well as soap?
Yes — widely valued in lotions, balms, facial oils, and hair treatments for skin-conditioning and emollient properties alongside its antioxidant function.