Dr Dennis Gross LED light mask This mask is specifically good for people with acne concerns because it uses blue LED lights to kill the bacteria that causes acne. Blue light therapy has been shown to be effective in reducing acne lesions and improving overall skin clarity. The mask also uses red LED lights to reduce inflammation and promote healing, which can help to reduce the appearance of acne scars, and fine lines and wrinkles. Get 3x points on beauty right now! @nordstrombeauty #nordstrompartner