Brand from South Korea: COSRX. Benefits: A cup of silk-made finger ball resembles the cocoons of silkworms to help minimize moisture loss while providing natural and gentle exfoliation on skin. How to use: 1. Soak the ball first in lukewarm water for up 3 minutes. 2. Use the softened ball on fingertips and gently massage face. 3. Wash the ball and let dry.