Abstract: Objective To study the efficacy and safety of hyaluronic acid medical wound dressing on skin repair after Picoway laser treatment. Methods Thirty patients after Picoway laser treatment were randomly divided into medical wound dressing group and control group. Medical wound dressing group was treated with medical wound dressing combined with the Danrushuang made by Shanghai Dermatology Hospital immediately after treatment, while the control group was treated with the Danrushuang made by Shanghai Dermatology Hospital alone for 7 days. Results The quantitative evaluation results of skin image analyzer (VISIA-6) showed that the improvement of redness area, texture and brown spots in the medical wound dressing group was better than that in the control group(P＜0.05) after 7 days treatment. CK skin tester (MPA-580) showed that the skin water content of the medical wound dressing group was obviously higher than that of the control group at different time points after laser treatment, and the transepidermal water loss at each time point was significantly lower than that of the control group(P＜0.05). There was no significant adverse events recorded in all patients. Conclusions The use of hyaluronic acid medical wound dressing after Picoway laser treatment may promote the recovery of the skin barrier, alleviate acute inflammatory reaction and have an obvious moisturizing effect.

Key words: hyaluronic acid, Picoway laser, skin barrier