Acne is the most common skin condition in people young and old. It appears as spots, blackheads or red scars in people aged between 12 and 25. Some older people too are affected at times. Boys are more commonly affected than girls. The range of occurrence of acne can be mild to severe. Acne usually affects the face but may also affect the back, neck and chest. About 8 in 10 teenagers develop some degree of acne. The common causes of acne include dust and pollution. Acne appears when a pore in our skin clogs. This clog begins with dead skin cells. Normally, dead skin cells rise to surface of the pore, and the body sheds the cells. When the body starts to make lots of sebum, oil that keeps our skin from drying out, the dead skin cells can stick together inside the pore. Instead of rising to the surface, the cells become trapped inside the pore. Acne medications work by reducing oil production, speeding up skin cell turnover, fighting bacterial infection or reducing inflammation, which helps, prevent scarring. Acne treatments are Lasers and other light therapies, Chemical peels and Acne removal by drainage or extraction. Acne spot treatment helps get rid one the dark spots left by the acne that are unpleasant. Dermatologists can help treat existing acne, prevent new breakouts and reduce your chance of developing scars. While some skin types respond quickly to acne treatments, it generally takes a few weeks or even a few months' time to see actual results. It could be anywhere from six to eight weeks for a noticeable change.