vitamin · for dry skin
Vitamin E
An antioxidant that protects the fats in your skin cell walls from damage.
Say that in clinical terms
Vitamin E protects skin cell membranes from lipid peroxidation by free radicals. It supports the skin's lipid barrier, reduces UV-induced photodamage, improves moisture retention, and works synergistically with vitamin C for skin protection.
How strong is the research?
In 15 patients, topical vitamin E did not improve scars and caused a rash in some.
4 papers read, 1 supporting, 1 against.
Who was studied: A broad review covering eczema, sun damage and cosmetic use rather than plain dry skin.
Searched PubMed systematically for oral vitamin E supplementation in human trials for dry skin or xerosis. Found 12 results for vitamin E + dry skin/xerosis + trial terms and 9 results excluding topical. No trial tests oral vitamin E alone as the intervention for primary dry skin (xerosis in otherwise healthy subjects). The closest papers are: (1) PMID 26941808 — oral vitamin E 400 IU/day in an RCT for atopic dermatitis, a specific inflammatory skin disease not simple dry skin; (2) PMID 24498826 — oral vitamin E 800 IU/day to prevent dermal complications of isotretinoin, which is drug-induced xerosis as a side-effect endpoint, not a primary dry skin study. The 2022 systematic review of dieta
How much to take
daily with a fat-containing meal
200–400 IU
Natural vitamin E (d-alpha-tocopherol) is preferred. Take with dietary fat for absorption. Can also be applied topically.
Before you take it
- All-cause mortality signal: at least one meta-analysis found a statistically significant increase in all-cause mortality at supplemental doses of 400 IU/day or higher.
- Anticoagulant and antiplatelet drug interaction: large supplemental doses can increase bleeding risk when combined with warfarin or antiplatelet agents (aspirin, NSAIDs); clinically significant interactions may occur above 400 IU/day, though the exact dose threshold is uncertain.
- Chemotherapy and radiotherapy interaction: oncologists generally advise against antioxidant supplements including vitamin E during active cancer treatment, as they may reduce therapeutic efficacy.
- Hemorrhagic stroke risk signal: two clinical trials documented increased hemorrhagic stroke risk at supplemental doses — the ATBC trial (Finnish male smokers) and the Physicians' Health Study II (400 IU every other day for 8 years).
- NIH ODS Tolerable Upper Intake Level for adults 19+ is 1,000 mg/day supplemental alpha-tocopherol (approximately 1,500 IU natural form or 1,100 IU synthetic form); the UL applies to all supplemental alpha-tocopherol forms including all eight stereoisomers present in synthetic vitamin E.
- Statin-niacin interaction: antioxidant supplementation including vitamin E may blunt the HDL-raising benefit of combined simvastatin-niacin therapy.
- Topical contact sensitization: topically applied vitamin E (tocopherol and tocopheryl acetate) is a documented contact allergen; a retrospective analysis of 38,699 patients by the North American Contact Dermatitis Group (2001-2016) found a 0.9% positive patch-test rate, clinically relevant in approximately 88% of positives; personal care products including moisturizers are the most common exposure source.
When to take it
Best taken: with food
What we make of it
Plausible biology, but the evidence behind it is about other skin conditions.
The detail
Protecting skin fats from damage is a reasonable mechanism. The supporting dermatology literature is mostly about other conditions, not ordinary dry skin.