Okay, so I have a lot of what I believe to be stretch marks around my butt and inner thighs. I know they don't really compromise my health in anyway but they do compromise my appearance.

I'm a teen nearing 18 and I'm just wondering if there are any effective products out there that anyone can recommend me to use that can treat the stretch marks up to a point where they aren't so visible (I'm not asking for a miracle). I'm not exactly rich so I can't go out and buy all those products they advertise on TV (which I'm sure do not work as well as it is shown on TV)

Also, I was wondering if sitting on a chair/hard surface for prolonged hours would be a possible cause to this problem (if so, I would devote more time to activity that doesn't involve sitting down for a long time)

I'd really appreciate it if anyone could help me out on this small question!