NYC dermatologist Dr. Shereene Idriss is sharing a simple, free test to determine if you have oily, dry, or combination skin. N_studio - stock.adobe.com You may need a thick skin to take this test.

There are five main skin types. Each type has distinct characteristics and needs that affect how the skin looks and feels. Once you know your skin type, you can build a skin-care routine that ...

Medically reviewed by Casey Gallagher, MD Castor oil is rich in ricinoleic acid, which helps moisturize and protect the skin ...

There are five skin types: normal, dry, oily, combination, and sensitive. You can test your skin type at home by observing oil, dryness, or redness on your skin. Age, sun damage, and hormonal changes ...

Using a new skin care product without testing it first can potentially cause allergic contact dermatitis, an inflammatory skin condition in which the immune system overreacts to an ingredient in the ...