Okay. This works like MAGIC for me. I keep having to reapply it daily, and if I miss a few days they get darker again. So I'm still in a testing phase so far - but I found out about it from my best friend who's a body builder in New Zealand.
It's called bio oil, and you can find it at
www.walgreens.com. I'm thinking it was like 12 dollars for two ounces of it. I bought to little things of it, and the first is still half full and I've had it a month. A little goes a really long way.
It's a pinkish orangish color. It has an unusual but nice smell. It's a dry oil, so it's not really annoying and staining like babyoil. Um... I don't know what else I can say about it. It's been out in places like the UK and Australia for years -but if you're in the US it's not exactly well known. Apparently rite-aid has it, but our local one didn't so I got it from walgreens online.
It's all I've used for mine, but it's working. (Btw. I'm a 5'4" 155 lb female, who gained a very good bit of weight VERY fast from birth control shots, and the weight loss had left my legs worryingly liney with stretch marks. I had people approaching me asking what I'd done to myself. Now I can actually go out in public in shorts

)
Seriously. Bio oil. That's my vote.