Acne is based on an inflammation of the talgklierfollikel . At the onset of acne Various factors play a role. In most cases, acne starts during puberty when the skin under the influence of various hormones changes. The sebaceous glands in the face, back and chest are bigger and produce more sebum or skin oil, which are also thicker composition. If too much sebum is secreted, the sebum and accumulate the output current of the sebaceous gland (the pores) become clogged. This sebum accumulations are called comedones or blackheads. There are superficial blackheads (comedones black) subcutaneous location and more blackheads (comedones white). Sebum accumulation is enhanced by increased cornification of the output current of the sebaceous glands, making them more closely. The sebaceous glands are bacteria, the sebum into fatty acids. By the accumulated sebum and irritating free fatty acids puts the clogged follicle still further and finally rips open. The irritants are in the right adjacent skin and cause inflammation. This causes pimples and blemishes.

Some forms of acne caused by external factors. Usually involves contact with substances that a blockage of the sebaceous glands cause, such as certain cosmetics. Continue to think of oil or bleach in certain occupations and industries. Also mechanical factors (pressure and rubbing) may aggravate existing acne. Examples include acne kinrand under a helmet and on the forehead by a head band. Finally, there are several drugs which can give rise to the emergence or worsening of acne, such as prednisone and some anti-tuberculosis and epilepsy.