Kose Bihada-Syokunin Black Pearl Face Mask Kose $19.99 5 pc - $19.99 Quantity This product is currently sold out. Please fill in the form below if you'd like to be notified when it becomes available. This mask specializes in firming the skin. The mask is made of triple layered cotton infused with a rich serum that includes black pearl, thermal spring water and amino acids that improve elasticity. Use daily for a radiant glow.