Concealer is a makeup product that comes in liquid or solid form that is used to cover up blemishes, dark spots and under-eye circles. Concealer can be used with or without foundation to cover up uneven areas on a person's face.
To create a flawless look, choose a concealer that is either the same shade or one shade lighter than the skin tone to which it is applied. A green-toned concealer can be used to help cover up pimples and other red blemishes on the skin. For easy application, concealer should be applied to a clean and moisturized face, according to Cosmopolitan.