We at Dr. Sandhya’s clinic use fractional CO2 lasers (active laser medium which is a mixture of 3 gasesg consisting of 10–20% carbon dioxide, 10–20% nitrogen, and the remainder is helium) to treat acne scars, deep wrinkles, stretch marks, old marks, keloids and other skin problems. It’s a non-invasive process that removes the damaged skin’s outer layers with a laser made of carbon dioxide.