Efficacy of Microneedling and CO2 Laser for Acne Scar Remodelling: A Comprehensive Review

Acne scarring is a prevalent issue affecting millions worldwide, with significant psychological and social implications. Microneedling and CO₂ laser therapy have emerged as promising modalities for acne scar remodelling. Microneedling induces controlled micro-injuries to stimulate collagen production, while CO₂ laser therapy precisely ablates scar tissue. This comprehensive review evaluates the efficacy, safety, and comparative benefits of microneedling and CO₂ laser therapy. Literature synthesis reveals both modalities to improve acne scars, albeit with different mechanisms and risks. Factors influencing treatment selection and the role of combination therapy are discussed. Future directions include optimising protocols and exploring novel techniques. Overall, microneedling and CO₂ laser therapy offer valuable options for acne scar management, empowering individuals to address the physical and emotional burden of scarring.