Soap made from 400-molecule collagen Although it is in the shape of a soap, it is a skincare item designed to condition the skin. Unlike typical collagen molecules, we have carefully selected two types, liquid and powder, and blended over 3% of ultra-low molecular weight "400-molecule" collagen. This provides moisture and elasticity to the skin's surface. Furthermore, it contains domestic silk from Tango Chirimen in Yosano-cho, Kyoto Prefecture. Silk (sericin), which has components similar to human skin, enhances moisture, luster, and smoothness, leading to more beautiful skin. Recommended for: Suitable for all skin types. Especially recommended for those concerned about dryness and dullness. Also, it is low-irritant, so it can be used with confidence on atopic skin, acne-prone skin, and babies.