Randomized trial of three phototherapy methods for the treatment of acne vulgaris in Chinese patients.

Background And Aims: Acne vulgaris is common in Asian populations. We compared three methods of phototherapy for the treatment of moderate to severe facial acne vulgaris in Chinese patients.

Methods: Patients were randomly assigned to receive photodynamic therapy (PDT), intense pulsed light (IPL) or blue-red light-emitting diode (LED) phototherapy to the right side of the face until the inflammatory lesion count reduced by ≥ 90%.

Histological and electron microscopic analysis of fractional micro-plasma radio-frequency technology effects.

Objective: The aim of this explorative study was to investigate the histological effects of a novel micro-plasma radio-frequency technology for skin rejuvenation the assessment of different parameters.

Methods: Thirty guinea pigs were randomly selected and were distributed into three treatment groups: 40W/10KJ, 60W/10KJ, and 80W/10KJ. The treated skin was analyzed immediately, one week and one month post-treatment using histology and transmission electron microscope (TEM).