I have a scar on my cheek where I had a lesion removed years ago. I did a lot of reading online, reviewing research, and I decided to try needling at home. Ordered a few dermarollers and stamps (different brands) of varying lengths. Have preferred the 1.0 and 1.5 needle lengths. Also got some numbing cream. Have needled/stamped 4 times now, once per month. It hurts but is tolerable after numbing cream. My scar is still there, but I can tell an improvement, so I am thrilled. Going to keep needling.