One of the best products that we carry at Sephora that is best for stretch marks is Strivectin SD for Stretch marks and wrinkles. It has been proven to diminish the stretch marks and you will see a significant difference in as little as 28 days. Sounds like a long time but that is how long it takes for your cells to turn over. Consistency is key with this product. Make sure you use it every day! Enjoy!
Hope this helps,