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The two are often believed to be interchangeable, but the main difference is that retinol is eventually converted into retinoic acid. Retinol is a natural form of vitamin A, while Retin-A is derived from retinoic acid, a synthetic derivative of vitamin A, and considered pharmaceutical.
Answer: Tretinoin cream is a common prescription given by dermatologists. Tretinoin is a vitamin A derivative. It works by two things: Firstly it increases the cell/skin turnover rate, and secondly, is boosts collagen synthesis.Because of these things it has many uses in dermatology.retinoin is a vitamin A derivative. It works by two things: Firstly it increases the cell/skin turnover rate, and secondly, is boosts collagen synthesis.