Not to be used concurrently w/ other retinoids or drugs w/ similar mode of action. Concomitant use w/ other potentially irritating topical products eg, medicated or abrasive soaps & cleansers, soaps & cosmetics w/ strong drying effect, products w/ high alcohol, astringents, spices or lime rind conc; sulfur-, resorcinol- or salicylic acid-containing prep.