Dr. Marie Jourdan, a dermatologist based in Paris, discusses the use of the **CO₂ fractional laser** on her Instagram account. This treatment is designed for individuals with atrophic scars, which are depressions in the skin caused by acne. While the laser can enhance the appearance of these scars, it is not a one-time fix. The healing process following treatment is an essential part of the overall experience. The **CO₂ fractional laser** is an ablative laser, meaning it removes thin layers of skin by vaporizing microscopic areas in a controlled way. Unlike traditional lasers that treat the entire surface, the fractional mode uses spaced micro-zones, leaving untreated skin between them. This technique allows for more controlled healing and reduces recovery time compared to full-surface treatments. The principle behind the **CO₂ fractional laser** is to create a controlled injury in the skin, which triggers the body’s natural repair mechanisms. These micro-impacts stimulate collagen production and skin remodeling, gradually improving the texture of the skin. However, the number of micro-impacts varies depending on the treatment area, the density of the laser settings, and the device used. There is no standard number that applies to all patients. For atrophic scars, the goal is to improve skin texture over time through this remodeling process. Clinical studies suggest that improvement is possible, but results are progressive and vary based on factors such as the type and depth of the scar, the individual’s skin type, and the specific laser settings used. Patients are encouraged to have realistic expectations and to follow the healing process as part of the treatment plan.