Abstract
Acne vulgaris is a common skin disease that results from a multifactorial disorder of the pilosebaceous unit. Although topical treatments for acne vulgaris have led to better outcomes, refractory cases are often encountered. The intense pulsed light (IPL) instrument M22TM acne treatment filter operates within two wavelength ranges of 400-600 nm and 800-1,200 nm. The short wavelength exerts both antibacterial and anti-inflammatory effects against acne, whereas the long wavelength is expected to lead to improvement of seborrhea. The present study was conducted to assess the efficacy of IPL treatment using the M22TM acne treatment filter for improvement of acne vulgaris. High treatment satisfaction was obtained after IPL treatment, with a reduction of inflammatory lesions and reddish acne scars. IPL treatment is therefore considered to be effective for refractory acne vulgaris.
