1,made of vegetable fiber 2,no coloring,no additives, 100% natural 3,high hydroscopicity , ... by WHO . 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 sebum, dirt ...