The two most common lights are red and blue. Red light (630nm) with near-infrared (830nm) has profound anti-aging benefits, it stimulates collagen and elastin production and strengthens skin. This light setting also reduces inflammation, heals blemishes, repairs sun damage and can help improve scarring.
Blue light (470nm) with red light (630nm) balances and clarifies the skin, treating acne. Blue light activates chemicals inside the bacteria, and stifles their ability to form acne and blemishes.