Long - term abusive masturbation results in serious acne through a variety of pathological means, such as an imbalance of androgen hormones that results in over production of sebum by the sebaceous glands, a lack of the inhibition of acne bacteria growth, and abnormal keratinization and comedone formation. (fullhealthsecrets.com)
Due to the excess production of sebum by baby's glands, acne - like rashes are seen on baby's chin, forehead, nose and cheeks. (gomama247.com)
They also can strip the skin of natural oils and if you have oily skin this can actually stimulate over production of sebum making the problem worse. (austorganic.com)