Acne occurs when your body experiences certain hormonal changes like during puberty, menstruation, menopause, pregnancy etc.
Basically, these hormonal changes instigate the sebaceous glands deep within your skin to secrete more oil, which blocks the pores of the skin by mixing with the dirt, dead skin cells and bacteria. Mostly, all acne goes away. Problem is that it leaves it scars behind.
There are four types of acne scars i.e. ice pick, boxcar, rolling and hypertrophic scars. These scars can be treated by various methods depending upon their type.Mild acne scars can simply be treated by topical creams or lotions. But the severe ones would need some other extreme measures like laser therapy, dermabrasion, Micro –dermabrasion etc.In the laser therapy, generally two types of lasers are used: the Erbium/ YAG laser, also known as non ablative laser; it stimulates the collagen and also causes tension in the tissues.
This method does not work well on all types of scars. The other type of laser being, the Carbon dioxide laser, which burns the affected area of the skin by causing heat. It does not affect any other area/ part. It helps in regenerating the skin with an even texture and tone. Laser therapy normally shows results after merely one session.In Dermabrasion, the top most layer of the skin, which is scarred is removed with the help of a wired brush (sanding procedure). It is painful and hence your dermatologist may even administer anesthesia before the procedure. It may take months for the skin to grow back.
Micro- dermabrasion is another variety of dermabrasion. In this procedure, aluminum oxide crystals are used to remove the skin. Even collagen injections may be given by your dermatologist. Multiple sessions are required for collagen injections to exhibit the desired results.Another method is the Autologous Fat transfer, where fat is extracted from certain part of the body and then injected into the scarred area. This procedure may take some time as the body has to accept the fat that has been transferred.This too requires multiple sessions usually after a gap of six to eighteen months. It is also known as asmicrolipoinjection and is mostly used for removing ice pick scars.