To use this liquid foundation concealer, first clean and moisturize your face. Then, squeeze a small amount of the concealer onto your fingertips or a makeup brush. Apply it evenly to the areas you want to cover, like blemishes or dark circles. Blend it well with your fingers or a sponge for a natural finish. Remember to shake the concealer well before each use to ensure an even consistency. Keep it in a cool, dry place away from direct sunlight. If you have sensitive skin, it's a good idea to do a patch test on your wrist first. Also, make sure to remove your makeup thoroughly at the end of the day to keep your skin healthy.