Rimmel London To use cream concealer, begin with a clean and moisturized face. Choose a shade that matches your skin tone or is one shade lighter for under-eye brightening. Apply small dots of the concealer to areas you want to cover, such as blemishes, dark circles, or redness. Blend the concealer into your skin using your fingers, a makeup brush, or a sponge, being careful to blend the edges to avoid harsh lines. If needed, apply another layer of concealer and blend again until you reach your desired level of coverage. Concealers & Correctors