Kumamoto Yamaga-produced Japanese sake, including Kuromatsu A small amount is included. Handmade by artisans Gentle foaming Also recommended at the beginning of hand treatment! Bisou Original Handmade Silk Soap Sericin, contained in silk, has ingredients very similar to the skin's natural moisturizing components. Using that silk as a material, we combined it with specialties of Kumamoto Yamaga City, such as local sake, horse oil, mulberry leaves, honey, etc., to create Bisou's unique handmade soap. Smooth yet moisturizing. You'll be satisfied with the feeling after washing. A soap handmade by artisans, one by one, mainly using silk (moisturizing ingredient) extract from Kumamoto Yamaga and horse oil. The gentle foaming of silk gently removes dirt from your skin.