Ahh.... It seems they are different, but do the exact same thing. Unfortunately, in my case, they pulled the skin tighter than they should have, and the skin was overlapping when it healed. At least, that's what I assume happened, I was after all 7 years old when it happened. 21 years later, the scar is barely noticeable, but it IS responsible in part for the way I choose to wear my hair. I used to be very self conscious about it, but have gotten less and less so over the years. Now I'm just too used to my hair being this way to change.