Dermaroller or microneedling is a way to treat marks left by acne or any mishaps. It can also be used for crinkles and stretch marks. Dermaroller works by way of tempting collagen in sunken acne scars, thus filling them up.
Dermaroller treatment is appropriate for atrophic scars, i.e. scars that have a hollow type appearance. Such scars cast shadows and make a person look awful contingent on the lighting. For hypertrophic scars, i.e. scars that have an upraised appearance, there are other methods such as steroid ointments or injections and silicone gels. Dermaroller treatment works best for shallow rolling type marks.