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.⁠ ⁠ 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.⁠ Learn more: https://mayocl.in/3TVp2l1 | Mayo Clinic