The statement is saying that while tocopherol may be listed towards the bottom of a product's ingredient list, it is still a very effective ingredient. Tocopherol is a form of Vitamin E, which is a well-studied and documented ingredient that many people include in their daily vitamin regimen.
Vitamin E has been found to have antioxidant properties, meaning it can help protect cells against the harmful effects of free radicals that can contribute to the development of diseases like cancer and heart disease. While Vitamin E supplements can provide antioxidant benefits, it's important to note that naturally occurring antioxidants found in food may be more beneficial.
When it comes to skincare, topical application of Vitamin E is best for achieving optimal results. When Vitamin E is ingested, it may not reach the epidermis (the outermost layer of skin) because it can get trapped in the fat under the skin. However, when applied topically, Vitamin E exerts its antioxidant activity on the epidermis of the skin.
Studies have shown that when the epidermis is exposed to ultraviolet radiation and Vitamin E is used topically, there is no erythema (skin inflammation, congestion, & irritation) or spongiosis (a pattern of injury to skin) that occurs. This means that Vitamin E is safe and very beneficial when used in proper concentrations, and can help protect the skin from the harmful effects of UV radiation.