Acne scars are formed when a breakout penetrates the skin deeply and damages the tissues beneath it. When inflammatory acne like a papule, pustule, or cyst occurs, the pore wall breaks down. If the inflammation is severe, the body's attempt to repair this damage can result in a scar. Scarring occurs when too little collagen is produced during the healing process, leaving behind an indentation on the skin.

Acne scars are typically atrophic (indented) and fall into three main categories. Ice Pick scars are deep, narrow pits. Boxcar scars are broader depressions with sharply defined edges. Rolling scars are wide and shallow, creating a wave-like or uneven appearance on the skin's surface. A person can have one or a combination of these scar types.

Yes, the results from effective acne scar treatments are considered permanent because the procedure stimulates your body to produce its own new, healthy collagen to smooth the skin. Once the collagen is remodelled and the scar's appearance is improved, it will not revert. However, it's important to maintain a good skincare routine and manage any active acne to prevent new scars from forming.