... make up, directly use for skin, K902 Moisturing Whitening EGF powder Effect:Mechanism: KGF-2 repair the skin stratum corneum , ... biology role is to promote the dermal layer of fibroblast cell division, proliferation, collagen synthesis, repair damage dermal layer; ... biology role is to promote the dermal layer of fibroblast cell division, proliferation, collagen synthesis, repair damage dermal layer; ...