Microneedling has proven to be a promising method for treating acne scars. It causes minor skin traumas without injuring the epidermis between the puncture sites, leveraging the benefits of the body’s natural cell regeneration. This treatment stimulates collagen production and promotes the formation of new cells. The best results are typically achieved after approximately three sessions (one per month), leading to improved skin structure and reduced visibility of acne scars.
Types and etiology of acne scars
All types of acne scars are composed of the same collagen as the tissue they replace. However, the composition of scar tissue, unlike healthy tissue, is different. Various types of acne scars differ in the amount of excess collagen. Atrophic scars are characterized by a blockade of collagen regeneration, preventing the overlapping of collagen fibers with normal tissue. Therefore, Atrophic scars appear depressed.
Classification of atrophic acne scars
- Ice Pick Scars:
typically punctate, sharp, deep, ‘V-shape’ in the longitudinal direction
- Boxcar Scars:
more rounded oval shape, diameter ranging from 1.5 – 4mm, broad at the surface and base, ‘U-shape’
- Rolling Scars
wavy shape, diameter ranging from 4 – 5mm, ‘M-shape’