Using a roller/gua sha on your face, neck and decolletage provides a gentle and luxurious massage. They are best used while applying your daily facial serum, oil or mousturizer. Benefits are said to: Benefits Boost circulation Improves skin elasticity and skin tone Promotes lymphatic drainage Reduces wrinkles and puffiness Reduces dark under-eye circles Provides cooling relaxation to your face and eyes Assists in the elimination of toxins Reduces pore sizes.