630nm vs 415nm: what each wavelength actually does to your skin

<h2>Two wavelengths. Two different mechanisms.</h2> <p>Most consumer LED devices emit a single wavelength — usually labeled "red light" — and call it a day. The Lumé Wand uses two: 630nm and 415nm. This isn't a marketing decision. It's a biological one.</p> <h3>630nm — Red Light</h3> <p>630nm red light penetrates 2–5mm into the dermis, reaching fibroblasts — the cells responsible for collagen and elastin production. At this depth, it activates cytochrome c oxidase, an enzyme in the mitochondrial respiratory chain. More enzyme activity means more ATP. More ATP means more collagen synthesis, faster cell turnover, and accelerated wound healing.</p> <p>The 630nm wavelength has been studied for over 30 years. There are 3,000+ peer-reviewed papers on photobiomodulation at this range. The mechanism is established, not speculative.</p> <h3>415nm — Blue Light</h3> <p>415nm blue light is bactericidal to P. acnes — the bacteria responsible for inflammatory acne. The bacteria absorb the light and generate reactive oxygen species (ROS) that destroy them from within. Surrounding tissue is unaffected.</p> <p>This is why dermatologists have used blue light devices for acne since the early 2000s. It's not new. It's just been inaccessible at home — until now.</p> <h3>Why both?</h3> <p>Acne is caused by P. acnes bacteria triggering inflammation. Blue light eliminates the bacteria. Red light reduces the inflammation and accelerates healing. Using both treats the cause and the damage simultaneously.</p> <p>This is also why the Lumé Wand is effective for both acne-prone and aging skin. The 630nm works for everyone. The 415nm handles active breakouts.</p>