I have written this many times before. especially when it comes to the treatment of acne scars, treatment should not be a "one size fits all" approach. There are a number of different types of acne scars, as can readily be seen in the photo provided here, so it really is not reasonable (despite the marketing hype for fraxel lasers and ultrasound devices, etc.) to expect one technique to do everything. In general, superficial chemical peels, since they are so superficial (and acne scars are deep) can be expected to do little more than refresh the skin and make it more glowing. So, this is not an appropriate option for actually treating the scars. Deep peels, whose significant downtime, make them more resemble more invasive surgical procedures like dermabrasion, and carbon dioxide ablative lasers, have certainly been shown to be effective for some types of scarring. But, as I mentioned, the downtime is much like after a surgical procedure and the risks of scarring from the procedure itself and of hyperpigmentation and permanent loss of skin pigmentation afterward are significant. Fraxel laser results tend to be variable and inconsistent and in my opinion not worth the considerable expense, despite all the device manufacturer backed marketing hype.An approach to acne scars that takes into consideration the characteristics and needs of the individual types of scars present in my opinion is a far more reasonable way of addressing the problems. For example, rolling scars may be individually treated with Subcision, with or without the concomitant treatment with fillers. Box scars may be treated with subcision below them to free them up and focal manual dermasanding to smooth the boxy ridges on the surface. Pit scars can be individually treated with a "fraxelated" high concentration peel approach known as the CROSS technique. And finally, the tone and texture of the surface of the treated skin can be better blended with surrounding normal skin via medical microneedling. The gains achieved by subcision, medical microneedling and the CROSS Technique are permanent.For more information on any of the above, I suggest you check out the archives of Realself.com. Consultation with a board certified aesthetic physician with knowledge, experience and expertise with all forms of acne scar treatments is strongly advised.