Strong evidencevitamin
Vitamin A for Dry Skin
Vitamin A (retinol) is essential for skin cell differentiation, turnover, and sebaceous gland function. It promotes keratinocyte maturation, enhances the skin barrier, stimulates collagen production, and normalizes desquamation to prevent dry, flaky skin.
How strong is the research?
Strong evidence
Based on a randomised controlled trial (RCT) — the gold standard for establishing cause and effect.
How much to take
2500–5000 IU
Do not exceed 10,000 IU daily (preformed vitamin A). Pregnant women should not exceed 3,000 IU.
When to take it
Best taken: with food