Spongilla Spicule is a kind of siliceous bio spicules,extracted from freshwater sponge (Spongilla fragilis Lecidy ).t can be seen as powder by human eyes,and as sharp rod crystal or blunt bone needles under the microscope.Sponge spicules are generally 200-300um in length and 10-15um in diameter.Only 5minutes,millions of natural siliceous spicules are directly introduced into thedermis layer through hand massage to promote skin metabolism and stimulate collagen regeneration. So it can be used as single/key ingredient, with auxiliary agents for face cream, lotion and liquid etc, Widely used in cosmetics and hair products. Suitable for skin problems: Acne, Black head acne, Oily skin, Horny metabolism, large pores, tiny wrinkles, spots, dark skin etc.