Tretinoin

Tretinoin is all-trans retinoic acid, the active vitamin A derivative that binds retinoic acid receptors in skin cells. That binding accelerates keratinocyte turnover, normalizes how dead cells shed, and over months supports new collagen, which is the mechanism behind its use for fine lines, acne and texture. It is the topical retinoid with the deepest clinical record. FormBlends offers 0.025%, 0.05% and 0.1% so a licensed provider can start where your skin tolerates and step up. Compounded by a US-licensed pharmacy. Common early effects are dryness and flaking; it raises sun sensitivity, so daily sunscreen is part of the routine, and it is not used in pregnancy.