My brother loves scars

So it’s been a few years now since my brother started sh, and we often talked about it because he needed to and I want to help him, but honestly I’m not helping so much, he doesn’t want to hear about therapy at all, he tried “other addictions” and getting tattoos but still came back at it, and I don’t think I understand him perfectly either bc I’ve done it but not for the same reasons, he does it because he thinks his body looks better with it, and like he really likes to cut and try different knifes and spots to cut, once he cut way too deep and he described to me how it was inside his arm, does anyone relate to this ? I’m interested in your experiences bc honestly I really can’t do anything anymore at this point.