comedogenic

These lists of comedogenic substances were developed many years ago and are frequently quoted in the dermatological literature.

Products that may trigger comedones are called "comedogenic."

Cosmetics: Most cosmetic and skin care products are not pore-clogging ("comedogenic.")

Excessive humidity is a trigger - especially if you use any rich face creams or cosmetics that contain comedogenic ingredients.

One of the common concerns regarding the use of mineral oil is its presence on several lists of comedogenic substances.

The key word is 'comedogenic'.

Acetylated lanolin alcohol is used as an emollient, to soften skin, but is highly comedogenic.

Hydrate with natural oils that are non comedogenic (non-pore-clogging), such as almond oil or avocado oil.

Others also contain talc, over which there is some controversy because of its comedogenic tendencies (tendency to clog pores and therefore cause acne) and because some people are sensitive to talc.

Although early work produced lists of comedogenic chemicals in various strengths and vehicles, it became apparent that the actual comedogenicity of a product could not be predicted from its contents; rather the finished product itself needed to be use-tested.