You might have seen those robot-looking red light masks being sold for skincare purposes. You might have thought — looks technological, but does it work?It's not just red light. There are a spectrum of health claims from infrared to ultraviolet.Norman and Tegan go through the rainbow to assess where there's evidence, and where there's not. References:Near Infrared Photoimmunotherapy: A Review of Recent Progress and Their Target Molecules for Cancer TherapyEffect of NASA Light-Emitting Diode Irradiation on Wound HealingVisible Red Light Emitting Diode Photobiomodulation for Skin Fibrosis: Key Molecular PathwaysUtilization of light-emitting diodes for skin therapy: Systematic review and meta-analysisPhotodynamic Therapy Using HMME for Port-Wine Stains: Clinical Effectiveness and Sonographic AppearanceEffect of Blue Light on Acne Vulgaris: A Systematic ReviewThe efficacy of violet light in the treatment of acneFeatured review: What are the benefits and risks of light therapy for treating atopic eczema?Light therapy for preventing seasonal affective disorder

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