So I brought this not for my stretch marks, but as a moisterizer in winter for my dry skin. I believe that if you're going to get stretch marks, you're going to get them and no "miracle" cream is going to prevent that.
Bio oil is great for dry skin. I only use it in winter as it's quite oily and in winter my skin gets quite dry. Using this stuff my skin is never dry! I only use it at night and by the morning, my skin is soft and moisterized and all the oil has been absorbed into my skin. I love it! I've been using it for the past 3 years (only in winter) and the condition of my skin has never been better. My skin tone is also nice and even. Overall, I love this product.