GLO24K Skin Rejuvenation Beauty Device for Face and Neck rejuvenates skin with LED Light Therapy, Thermal, and Vibration Technologies. It reduces wrinkles, boosts firmness, and offers a spa-at-home experience. Ideal for face, neck, and triceps. GLO24K Neck and Face LED Beauty Device is easy to use, travel friendly, light weight, rechargeable, and ergonomically designed. Below is the wavelengths of the various LED lights and associated benefits: Red Light (620-630 nm) – associated with anti-aging and age-defying benefits, more rejuvenated and radiant appearance, and battling the visible signs of the aging process. Blue Light (415-435 nm) – associated with skin nourishment and may help with overall skin appearance. It can also help improve skin's texture and tone. Green Light (530-540 nm) – associated with soothing and calming the skin and for balancing it. Also can assist with sagging skin and other visible signs of the aging process.