Vitamin A is a collection of structurally related chemical molecules rather than a single substance. Retinol, retinaldehyde, retinoic acid, and provitamin A caretenoids such as beta-carotene, alpha-carotene, gamma-carotene, and cryptoxanthin are among these molecules. Vitamin A is present in food and supplements in the forms of retinol and beta-carotene, the former of which is found in animals and the latter in plants.
Skin health, eyesight, the immune system, and gene transcription are all influenced by vitamin A. Vitamin A comes in a variety of forms, each with its own set of functions. Retinoic acid, for example, is involved in gene transcription and skin health maintenance; retinaldehyde attaches specific proteins to the eye’s cones and rods, allowing the eye to operate in low-light situations.
How to Take
For topical application, all-trans retinoic acid (Tretinoin) in the range of 0.01-0.10 percent should be used in a face cream/lotion, with the lowest dosage having fewer side effects but less effectiveness and 0.025-0.05 percent being the sweet spot. Once a night, apply the topical solution.