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Safe and effective treatment of dark spots on darker skin tones.

Study proves picosecond 730 nm laser provides minimal risk of hyperpigmentation for treatment of dark spots.

By Emilee Green | Sep 09, 2021

Dr. Arielle Kauvar

Wausau, WI (September 9, 2021) – Dark spots (solar lentigines) add years to one's appearance and are a very common aesthetic concern for patients seeking anti-aging treatment. These dark spots are treated with lasers, but patients with darker skin tones often develop pigmentation from the procedure that may linger for weeks to months. The picosecond 730 nm laser was specifically developed to address this concern. In this study of 20 subjects with 37 body regions, the 730 nm picosecond laser produced good clearance of solar lentigines on the face and body with rapid healing and without side effects.

The clinical report, led by Arielle N. B. Kauvar, MD, is titled “Treatment of facial and non-facial lentigines with a 730 nm picosecond titanium: Sapphire laser is safe and effective.” 

The study, published in Lasers in Surgery and Medicine (LSM), the official journal of the American Society for Laser Medicine and Surgery, Inc. (ASLMS), was selected as the September 2021 Editor’s Choice.

“Solar lentigines, dark spots that result from sun exposure, are a common aesthetic concern, but patients with dark skin tones often develop hyperpigmentaion following laser treatment of these lesions,” said Kauvar. “The titanium:sapphire 730 nm picosecond laser provides an optimal combination of wave-length and pulse duration for effective treatment of solar lentigines with minimal risk of hyperpigmentation.”

Dr. Arielle Kauvar is the founding director of New York Laser & Skin Care, a private practice specializing in laser surgery, Mohs surgery, cosmetic dermatology and clinical research, and a clinical professor of dermatology at NYU Grossman School of Medicine, where she teaches advanced dermatologic surgery. She is a board-certified dermatologist and a leading authority on laser technology, minimally invasive skin rejuvenation and skin cancer treatment. Dr. Kauvar has pioneered many laser and device-based treatments for skin disorders and remains actively engaged in the development of new technology and clinical research. Dr. Kauvar is the 2021 recipient of the Leon Goldman memorial Award from the American Society for Laser Medicine and Surgery.

Editor’s Choice is an exclusive article published in LSM, the official journal of the ASLMS. View the complete manuscript.

The American Society for Laser Medicine and Surgery, Inc. (ASLMS) is the largest multidisciplinary professional organization dedicated to the development and application of lasers and related technology for health care applications. ASLMS promotes excellence in patient care by advancing biomedical application of lasers and other related technologies worldwide. ASLMS membership includes physicians, surgeons, nurses, and allied health professionals representing multiple specialties, physicists involved in product development, biomedical engineers, biologists, industry representatives and manufacturers. For more information, visit


The American Society for Laser Medicine and Surgery is the world’s largest scientific organization dedicated to promoting research, education and high standards of clinical care in the field of medical laser applications. It provides a forum for the exchange of scientific information and participation in communicating the latest developments in laser medicine and surgery to clinicians, research investigators, government and regulatory agencies, and the public.

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