The BLF 210 Lip Definer Brush is a brush designed for shaping and applying lip products. Its small, pointed brush head is perfect for creating defined, precise lines and shapes around the lips.

To use, dip the brush into your chosen lip product, starting at the center of your upper lip, and apply the product outward towards the corners of your mouth. Then, repeat on the lower lip. You can also use the brush to fill in the lips with color, blending the product outwards with the brush for a seamless finish.

Make sure to clean your lip definer brush regularly to maintain its effectiveness and prevent the buildup of bacteria. You can do this by washing it with a gentle shampoo or brush cleaner, and then laying it flat to dry.