Due to the poor quality of cosmetics
Using Acne products or of poor quality, these products contain corticosteroids has the effect of restraint for the time of the development of acne but acne then do much development and preponderance of making concave scar formation.
Moulding pimples when inflamed hair follicles
Moulding pimples in stages are inflammation of the hair follicle to make widespread inflammation plus bursts infections make heavier inflammation develops into acne cysts form.
Because the blackheads
This form of scarring usually have rounded surfaces are deep hollow, with an area of about 2-5nm. Scarring due to blackheads often present in 2 side cheeks and nose.
Improper hand washing
Improper hand washing (strong Palm hand towel) can also cause skin injury and scarring. So, after face washing is done, it's best to leave the skin dry yourself or use a soft towel dots light up the face skin (do not rub).=