I used Bio-oil and got quite a few stretch marks (at about 19 weeks) - nasty dark red ones, then I switched to Jurlique Hops Lotion and Macadamia oil (macadamia over the hops lotion) and they all went away within 2 weeks. I haven't seen even a hint of a stretch mark since. I love the Hops Lotion although it really stinks! I was willing to ignore the smell because it worked!