Pulsed-dye laser can reduce acne lesions by using high and low fluences, according to a prospective, single-blinded split-face clinical trial involving 55 individuals with moderate to severe acne.

Participants, averaging ~22 years of age, received pulsed dye laser treatment at either high or low fluence at 3-week intervals on each half of their face. After 4 treatments, photographs were blindly evaluated....

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