a certain impermeability. It is synthesized by the sebaceous glands of the skin, located at the base of our hairs. Inside these glands live bacteria called Propionibacterium acnes, which are part of the natural flora of our skin. Clogged, the glands of the skin become microbial tanks But during adolescence in particular, these glands produce an excess of sebum . The skin is too greasy. So much so that the liquid ends up plugging the pores of the glands.
http://tophealthydiet.com/luna-illuminate/
