Measured in nanometers (nm), “red light (620 to 700 nm) penetrates deeply into the skin, stimulating collagen and elastin production, while near-infrared light (700-1200 nm) penetrates even ...
Now, when I say acne, I’m talking about anything from angry red pustules to bumpy closed comedones and pesky whiteheads and blackheads. The treatment that’s best for a teen will depend on the ...