LED light therapy “can help improve skin texture, reduce blemishes and hyperpigmentation, and even out skin tone,” as well as calm psoriasis, improve the general appearance of your skin and reduce visible signs of ageing. Near Infrared Light 700-850nm Near infrared light has no colour, but can penetrate even deeper into the skin and layers of tissue and muscle in comparison to red light. How to clean your LED face mask will differ depending on which LED mask you've purchased and what your mask is made from.