Hello.. I am 29, 5'6, 120 pounds and exercise regularly, but yo-yo dieting when I was younger has left my buttocks and upper thigh skin a bit loose, with stretch marks. I have read about so many options, but what is the best? Fraxel? I also have a scar on my buttocks from a birth mark removal when I wasn't younger and would love if that improved even just slightly. Please inform me; I'm looking to begin treatments asap. Thank you!