Prospective Study of 532-nm Picosecond Laser for the Treatment of Pigmented Lesions of the Face and Dorsal Hands. Issue 11 (18th November 2022)

• Record Type: Journal Article
• Authors: Friedmann, Daniel P.; Timmerman, Alina; Cahana, Zoya
• Is Part Of: Dermatologic surgery. Volume 48:Issue 11(2022)
• Page Start: 1215
• Page End: 1219
• Publication Date: 2022-11-18
• Subjects: Skin -- Surgery -- Periodicals; Skin -- Diseases -- Surgery -- Periodicals; 617.477
• DOI: 10.1097/DSS.0000000000003602
• Languages: English
• ISSNs: 1076-0512

Abstract

Abstract : BACKGROUND: Pigmented lesions from chronic UV photoaging are extremely common on the face and hands. OBJECTIVE: To evaluate the safety and efficacy of a 532-nm picosecond laser for these types of pigmented lesions. METHODS: This was a single-center, prospective, open-label clinical trial. Eligible subjects with pigmentation on the face and hands received 3 monthly treatments, with 1 month (1M) and 3 months (3M) follow-up. Change in investigator-graded overall facial and per lesion pigmentation and subject-graded satisfaction and pigmentation improvement was evaluated by a 5-point scale. Immediate skin response and adverse events (AEs) were evaluated post-treatment. The melanin index was measured using a mexameter. Randomized before and after photographs were graded by 3 blinded physicians for degree of pigmentation improvement. RESULTS: Twenty-five subjects (22F/3M) with Fitzpatrick skin types I-III were enrolled, with 23 subjects completing. Treatments used a 532 nm wavelength, 800 ps pulse duration, 4-6mm spot size, and 0.1 to 0.6J/cm2 fluence. Good-to-excellent clearance at 1M/3M was demonstrated in ≥95% of lesions (n = 116). Only mild treatment-related pain was reported, with transient post-treatment AEs (mean downtime of 2.1 ± 2.0 days) and no serious treatment-related AEs. Subject satisfaction (satisfied or very satisfied) was 95% at 1M and 91% at 3M. CONCLUSION: Treatment with a 532-nm picosecond laser is safe and highly effective for the treatment of the pigmented lesions of the face and dorsal hands.