1,made of vegetable fiber 2,no coloring,no additives, 100% natural 3,high hydroscopicity ,soft and ... . GLUVOMANNAN is the main ingredient of the konjac fiber ,so-called KGM.it has very high hydroscopicity ... the konjac sponge is just made of konjac fiber.Why they love konjac sponge ?effectively remove excess ... keep skin soft & fresh,bring back the natural glow3,remove make-up gently,never course harm ...