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Potential risks and complications. Blue light therapy on its own, without the photosensitivity drugs added, is safe and has very few risks. The biggest risk is for a potential skin...
In this Mayo Clinic Minute, Dr. Dawn Davis, a Mayo Clinic dermatologist, explains the different types of light therapy, what they treat, and if over-the-counter light therapy devices are safe and effective.
Sun damage can sometimes be undone. A technique called photodynamic therapy directs wavelengths of blue fluorescent light to activate a topical medicine applied to the skin. It selectively kills abnormal, potentially cancerous cells in specific areas.
Blue LED light therapy may destroy acne-causing bacteria (P. acnes). During treatment, skin specialists may use a combination of lights to treat your specific issue. At-home devices may also combine colors.
Blue light therapy can help clear acne and treat sun damage and some kinds of skin cancer. A dermatologist explains how it works and who can benefit from feeling blue.
If blue light does have adverse health effects, then environmental concerns, and the quest for energy-efficient lighting, could be at odds with personal health. Those curlicue compact fluorescent lightbulbs and LED lights are much more energy-efficient than the old-fashioned incandescent lightbulbs we grew up with.
Side effects and risks of blue light therapy When used according to directions or in an in-office setting, low doses of blue light won’t cause skin cancer, says Dr. Patel. (They don’t contain ultraviolet radiation or UV light.)