... Some of these modalities may be helpful to treat acne scarring as well. These treatments include comedo extraction (Meredith and Ormerod, 2013;Zaenglein et al., 2016), cryotherapy (Fox et al., 2016), electrocauterization (Fox et al., 2016), chemical peels (Dreno et al., 2011;Grover and Reddu, 2003;Ilknur et al., 2010;Kempiak and Uebelhoer, 2008;Levesque et al., 2011;Meredith and Ormerod, 2013;Ramos-e-Silva et al., 2015;Zaenglein et al., 2016; including glycolic acid Atzori et al., 1999;Grover and Reddu, 2003;Ilknur et al., 2010, SA Levesque et al., 2011, and retinoic acid Ramos-e-Silva et al., 2015, microdermabrasion (Karimipour et al., 2010;Kempiak and Uebelhoer, 2008;Lloyd, 2001;Ramos-e-Silva et al., 2015;Tan et al., 2001), laser treatment including pulsed dye, potassium titanyl phosphate, fractionated CO 2, fractionated and nonfractionated infrared, radiofrequency, and intense pulsed light), photodynamic therapy (Barbaric et al., 2016;Gold et al., 2004;Kong and Tey, 2013;Ma et al., 2013;Nast et al., 2012;Pollock et al., 2004;Ross, 2005;Sakamoto et al., 2010;Wang et al., 2010;Zaenglein et al., 2016 including blue-violet light phototherapy and red light phototherapy), narrow-band ultraviolet B phototherapy (Meredith and Ormerod, 2013;Ross, 2005;Zeichner, 2011), intralesional triamcinolone acetonide (Levine and Rasmussen, 1983;Potter, 1971), surgical techniques (Jacob et al., 2001;Ramos-e-Silva et al., 2015;Sanchez Viera, 2015 including punch excision and subcision), and filler (Jacob et al., 2001;Sanchez Viera, 2015). ...