As an acne sufferer, I am sure you may have been told to apply glycolic acid. Acne is an inflammatory skin problem causing pimples, irritated skin and blocked pores.
To treat acne properly, you need to try and reduce oil production, speed up the skin cell turnover and deal with any bacterial infection.
Using oil free skin care preparations will help reduce the oil on your skin whilst antibacterial agents such as Benzoyl peroxide will be used to fight infection. Glycolic acid may be used to help speed up skin cell turnover. It works by removing the top layer of your skin i.e. it helps to remove the dead skin on the upper layer of the epidermis.
It is hardly surprising that glycolic acid is used as a skin exfoliant. Concentrated glycolic acid is used as a rust removal agent by various industries. Obviously the strength of the acid you apply to your skin would be a lot less, usually under 10%, but you can perhaps see why some doctors are concerned about patients using glycolic acid particularly in the home.
Some forms of acne should not be treated by exfoliating. If you suffer with pustules, exfoliating can open these and spread the infection around...