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A new 532 nm, variable-pulse-structure, dual-wavelength, KTP laser incorporating cryogen spray cooling effectively treats rosacea

Study shows that the green light vascular laser significantly improves facial redness and flushing.

By Andrea Alstad | Sep 28, 2023

Wausau, WI (August 28, 2023) – Rosacea is a common condition where people acquire unwanted blood vessels from the sun. These vessels flush and blush in response to almost any stimulus including hot, cold, emotions, exercise, and alcohol. This study explores a new laser developed using green light to target facial redness and flushing and has spray cooling to protect the skin and make treatments more comfortable.


The study, led by Eric F. Bernstein, MD, MSE, is titled, “A new 532 nm, variable-pulse-structure, dual-wavelength, KTP laser incorporating cryogen spray cooling effectively treats rosacea.”  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 2023 Editor’s Choice.

Nineteen subjects were treated in this study with 2-passes of the laser energy: one for treating the linear veins on the face and then another pass to treat general redness. Side effects were limited to short-term redness and puffiness, and no bruising was noted.

“New developments for the treatment of rosacea are of great interest to me and can impact large segments of the population,” Bernstein said. “This is a new vascular laser, the first to incorporate spray cooling with a 532 nm, KTP laser (green light vascular laser). We show this laser can significantly improve facial redness and flushing of rosacea.”

Eric F. Bernstein, MD, MSE, is the founder/director of the Main Line Center for Laser Surgery, which recently joined Advanced Medesthetic Partners, a PE-backed multispecialty esthetic group, where he serves as Chief Laser Officer. He served as president of the ASLMS from 2018-19. He is on numerous laser company scientific advisory boards.

Dr. Bernstein currently serves as volunteer faculty at the University of Pennsylvania and Temple University in the Department of Dermatology as a Clinical Professor. He has authored over 100 peer-reviewed articles, over 15 US and international patents, and has given more than 400 presentations at scientific meetings.

Editor’s Choice is an exclusive article published in LSM, the official journal of 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, Inc. 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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