Article: Combined 633-nm and 830-nm LED treatment of photoaging skin.

Abstract

Objectives: To evaluate the clinical efficacy and ultrastructural changes in photodamaged skin after combined 633-nm and 830-nm light-emitting diode (LED) treatments.

Methods: Thirty-six subjects received 9 LED treatments over the course of 5 weeks and were subsequently evaluated for final clinical improvement 12 weeks after treatment. Five subjects were also biopsied to determine the ultrastuctural posttreatment changes in collagen fibers.

Results: A statistically significant improvement in wrinkles was seen after profilometric analysis. The majority of subjects reported improvements in softness, smoothness, and firmness at all time ...

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