develop in close association with hair. They produce the vital, protective oily fat layer of the skin distributed over the entire body. From 300,000 sebaceous glands we produce about 2-3 g of sebum every day, half of it on the head. Only the palms of our hands and soles of our feet lack them. In addition, the skin is lubricated daily by about 20 mg of horny fat from dead skin cells.
can grow strongly under the influence of male hormones (also in women). One of the factors in the development of acne is the uninhibited production of fat by the sebaceous glands.