Lasers are felt to improve acne by damaging oil glands in the skin through direct heating. A variety of different laser wavelengths including 532 nm, have been shown to reduce acne lesion count. Overall clearance rates range from 30% to 70%, after multiple treatments. A single treatment is unlikely to garner significant improvement. A series of treatments is mandatory.
The 532 KTP laser reduces acne pimples and pustules but has little impact on deeper cysts. The wavelength is felt to improve acne through the following mechanisms of action:
The treatment protocol consists of one treatment per week for 4 to 6 weeks.
The cost per treatment is $250.
KTP laser is safe in all skin types as well as pregnancy. Bleaching creams are recommended in skin of color prior to the treatment. No treatments must be discontinued with this laser.
Resources:
A review of lasers and light sources in the treatment of acne vulgaris
Arisa Ortiz 1, Michael Van Vliet, Gary P Lask, Paul S Yamauchi 2005 Jun;7(2):69-75.
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