Do Red-Light Masks Really Keep You Looking Young?
Home red-light therapy devices have exploded in popularity, with masks, body wraps, and mittens promising to reduce wrinkles, redness, and even acne. But do the claims stack up, and what other benefits are scientists investigating?
In a recent podcast, Ian Sample hears from his co-host, Madeleine Finlay, and consultant dermatologist Dr Jonathan Kentley. Kentley explains how the potential benefits of red light were discovered, how it is thought to interact with collagen in our skin, and what science has to say about its impact on our appearance.
The Science Behind Red Light
Red light therapy, also known as photobiomodulation, uses low-level wavelengths of red light to penetrate the skin. It is believed to stimulate collagen production, reduce inflammation, and improve blood circulation. The therapy was originally developed for wound healing and has since been explored for various dermatological conditions.
Dr Kentley notes that while early research is promising, more rigorous studies are needed to confirm the anti-aging benefits. Some small trials suggest improvements in skin texture and wrinkle depth, but results vary.
What About Acne?
Red light therapy may also help acne by reducing inflammation and killing acne-causing bacteria. However, blue light is often more effective for active acne. Combination devices are available but can be costly.
Overall, experts advise caution. While red-light masks are generally safe, they are not a substitute for proven skincare routines like sunscreen and retinoids. Consumers should look for devices cleared by regulatory bodies and manage expectations.
For more details, listen to the full podcast episode on the Guardian's Science Weekly.
