A Comprehensive Review of Non-Energy-Based Treatments for Atrophic Acne Scarring.

61 , 70 , 72 , 73 Although most studies show very minimal improvement in ice pick scars, a study by Gupta et al achieved mildly significant improvement in ice pick scars. 74 The authors suggested that using a dermaroller with 2.0-mm needles could be responsible for these results because of the depth of ice pick scars, which would otherwise be harder to replicate with the more commonly used 1.5-mm needles. 73 On the other hand, one inte

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