collagen production

LED Irradiation Increases Collagen Levels

Irradiation with Light-Emitting Diodes (LED) increases type I collagen production and the number of viable fibroblasts in cultured skin cells, according to researchers at the department of dermatology, Dongguk University Ilsan Hospital in Gyeonggi-do, South Korea. For the study “Antiphotoaging Effects of Light-Emittting Diode Irradiation on Narrow-Band Ultraviolet B-exposed Cultured Human Cells (Dermatologic Surgery, October 2012), Yu Shun Tian, PhD, et al, treated NB-UVB-irradiated keratinocytes with four wavelengths—630nm, 660nm, 830nm and 850nm.