A cosmetic tool called the 7 Colors Light LED Facial Mask uses various colored lights to enhance the appearance of the skin. The skin is said to respond differently to each of the seven different colored LED lights that are typically present in it. Blue light is said to help with acne, green light is said to lighten dark spots and even out skin tone, and so on. Red light is said to increase skin elasticity and reduce the appearance of fine lines and wrinkles. The lights are usually left on for a set amount of time, like 15 to 20 minutes, and the mask is worn over the face like a regular face mask. In the market, the mask is for sale.