Medical Grade Silicone: These brushes are made up of fine medical grade silcione which is completely safe for skin, Lip Exfoliation: This product is ideal to exfoliate lip with gentle and effective exfoliating effect, Face Mask Application: Its curved side is suitable for evenly distributing the face mask throughout, Travel Friendly: These small sized brushes are very easy to carry while you are changing places, 2 sides: The 2 sides of this brush solves the dual purpose of exfoliation and face mask applicator.