Concealer is a makeup product used to cover imperfections on the skin, such as blemishes, acne, dark circles under the eyes, scars, or pigmentation. Concealer has a thicker texture and is more pigmented than foundation, so it can provide higher coverage to cover areas that require more attention. Concealer comes in a variety of forms, such as stick, liquid, or cream, and is often available in a variety of shades to suit individual skin tones. This product is also often used to highlight or contour, depending on the type.