Is a skin treatment that doesn't use ultraviolet light. Instead, it uses skin-safe, low-level light in different wavelengths and colors. LED lights have been available since the 1960s, the U.S. Navy SEALs began using it in the 1990s to help heal wounds quickly and to help regenerate damaged muscle tissues but it has only been used in the past few years to treat the skin. Since then, the treatment has been researched for different situations in aesthetics. It’s mainly noted for increasing collagen and tissues. All of which can smooth out your skin and reduce the appearance of damage. Different wavelengths enter the skin at different depths, making this therapy useful to treat a variety of skin conditions, including: