Yes as healing time takes a while and it takes a VERY long time for the skin to “merge” so that it’s not noticeable. I have a few close friends that got it done as adults and it was noticeable that it was done as an adult years after. My ex had it done about 10 years ago and only now is it starting to look like it was done a long time ago. Also keep in mind, healing powers are much better when you are a kid as the body is still growing so it kinda grows into itself if that makes sense.