As both retinol and retinoids are often found in cosmetics and dietary supplements, the terms are commonly used interchangeably. Anti-aging, acne-fighting, discoloration-reducing, and skin- brightening benefits have all been attributed to them. Because these substances are ineffective in sunlight, dermatologists recommend using them after dark. Both begin life as vitamin A and must be converted into retinoic acid before they can be used on the skin. Retinol and prescription retinoids share the same first syllable, although retinoid is the more general name for them both. Nevertheless, retinol is more widely available since it is an OTC medicine despite having a ... Read More