The right formula cleanses your skin without stripping essential, healthy oils. Take it easy with exfoliating scrubs (use once a week) and avoid those with crushed walnut shells or abrasive ingredients.
This term frequently appears on product labels and is used by skin-care experts but not always defined in simple, clear language. Here’s a quick explanation: If a product claims to be non-comedogenic it means that it shouldn’t clog pores or trigger acne — either by occluding the skin, blocking glands or irritating the hair follicle. The claim is not regulated by the F.D.A., however, and many companies do their own internal tests to determine whether a product should be considered comedogenic or not. (Some common known comedogenic ingredients are coconut oil and cocoa butter.) Typically, the fewer ingredients a product has, the easier it is to determine if it will cause any reactions.
SOURCED FROM THE NEW YORK TIMES