What are those exactly?
I think I might've used something similar on the scar on my hand - I had to have pins put in it last year after I fractured it, and I was left with a scar about two and a half inches long. I was given a sticky strip by my physio therapist that would smooth the scar and help it heal. Is that what you're talking about?
If so, yeah, it helped on that particular scar.