Silicone gel sheets are widely used to treat keloids and hypertrophic scars. Scarclinic(TM) is a type of silicone gel sheet developed in Korea, and has been shown to improve the appearance of scars. However, Scarclinic(TM) has demerits that include weak adhesiveness, a color that differs from skin, and too great a thickness. Scarclinic-thin(TM) was recently developed with these disadvantages in mind. The purpose of this pilot study was to compare the effects of Scarclinic-thin(TM) and Scarclinic(TM) on scar appearance and wearer's comfort. From April 2010 to May 2010, Scarclinic-thin(TM) and Scarclinic(TM) were applied to treat a single scar in each of 8 patients. One half of each scar was treated with Scarclinic-thin(TM) and the other with Scarclinic(TM). After 3 months, scar quality and wearer's comfort were evaluated using the Vancouver Scar Scale(VSS) and an objective self-assessment scale (OSAS). Mean Vancouver Scar Scale scores for Scarclinic(TM) and Scarclinic-thin(TM) at 3 months were 3.4+/-1.3 and 3.3+/-2.0, respectively, and mean objective self-assessment scale scores were 21.7+/-4.5 and 22.3+/-2.9, respectively. No statistically significant difference was observed between Scarclinic(TM) and Scarclinic-thin(TM) in terms of Vancouver Scar Scale or objective self-assessment scale scores(p=0.83 and 0.70, respectively). Scarclinic-thin(TM) and Scarclinic(TM) are similar in terms of their scar improving effects and wearer's comfort.