To use this concealer, first prep your skin by cleansing and moisturizing. Then, take a small amount of the concealer on your finger or a makeup brush. Dab it gently on the areas you want to cover, like dark circles or blemishes. Blend it well for a natural look. Remember to close the cap tightly after each use to keep the concealer fresh. If you have sensitive skin, it's a good idea to do a patch test first. Also, store it in a cool, dry place away from direct sunlight.