concealer

thumb|Liquid concealer Concealer is a type of cosmetic that is used to mask imperfections on the skin. These imperfections can include dark circles under the eyes, blemishes, and hyperpigmentation. Concealer is similar to, and can be used in conjunction with foundation, a lighter cosmetic that is used to even out the skin tone. Both concealer and foundation are typically used to make skin appear smoother and more uniform in color. These two types of cosmetics differ in that concealers tend to be more heavily pigmented, though concealer and foundation are both available in a wide range of colors and opacities.

To use a concealer, an individual typically applies a small amount of product to the area of the skin that they want to cover. The concealer is then blended into the surrounding skin using a brush, sponge, or the fingertips to create a seamless finish. Concealers can be applied before or after foundation, depending on the desired effect. Applying concealer before foundation can help to create a more even canvas for the foundation, while applying concealer after foundation can help to touch up any areas that still require coverage.