An rejuvenating, stress-relieving experience. It was originally developed by NASA, LED works by sending energy-producing light into the deepest layers of the skin. The effects plump up aging skin by boosting collagen production. LED can also help treat mild to moderate acne. Violet: Purifies Skin, bacterial action, removes blackheads.Blue: Soothes and relaxes skin, calms nervous system.Aqua: Helps skin oxygenation, increases cellular activity proves skin elasticity.