Concealer is a type of makeup designed to conceal or hide certain areas of the face, such as under-eye circles, blemishes, and discolorations. It is available in many colors, from light to deep, so that it can blend in with different skin tones. While concealer is usually associated with women, men now have access to concealers for hiding unwanted facial features. With concealer, anyone can achieve more even coverage on the skin's surface regardless of gender.