How will I know whether subcision will be effective for my deep acne scars?

With regards to your question: Fractional CO2 lasers generally penetrates deeper than Erbium lasers Fractional CO2 lasers also generally penetrates deeper than Fractional RF devices EXCEPT Microneedle RF machines that can reach a depth of 3. 5mm (only in some machines) which in this case will have a greater penetration depth as compared to Fractional CO2 machines.

Hi, Generally, very deep acne scars that are less than the diameter of the punch (usually 3mm in diameter) are candidates for punch excision as these scars respond very poorly to other modalities of acne scar treatment such as subcision and fractional lasers. Such very deep acne scars with a small surface diameter are also known as “ice-pick” scars. The punch excision converts the deep ice-pick scars to a superficial line scar which subsequent resurfacing procedures will help improve further. Hope this helps!