... : Skin whitening Exfoliating Remove blackheads Fine pores Features:Silk is pure natural materials, and also has the protein closest to skin ... in his medical masterpiece, "Compendium of Materia Medica" records, natural silk can make the skin become the beauty, to eliminate the ... often or excessive force.5. Because it is natural, there may be discoloration, it doesn't affect usage. Natural silk cocoon