Stretch Marks....Will they ever go away?

I started to get stretchmarks around my due date (I went 2 weeks over!)... I think really if you get them or not during pregnancy has a lot to do with genetics. I also lotioned, kept hydrated and kept my preg belly out of the sun. I'm 6 months postpartum now and they are almost flesh color (I have pale skin).. but when the sun hits them the skin is different. They never completely go away. I've heard some people say they have had success with bio oil but I don't really buy it. You could always give that a try though if you wanted to do something! They fade overtime but the skin never fully repairs.