Mayo Clinic Minute: Dermatologist explains light therapy for skin [Video]

Dermatologists advise their patients to avoid harmful ultraviolet light, which can cause skin damage, photoaging and skin cancer. But they also may prescribe light therapy to treat certain skin conditions. Light therapy is a treatment that uses different wavelengths of light to treat various skin conditions. 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.
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