# Red and other light therapy — can it work?

An episode of [What's That Rash?](https://invisiblenetwork.ai/podcast/1501500390), 14 Apr 2026, 18 min.

Audio: https://mediacore-live-production.akamaized.net/audio/02/jh/Z/fh.mp3

If you’re into skincare, you’ve probably been advertised light therapy face masks. These high-tech hockey masks promise to plump up or heal your skin through light – often red, but sometimes yellow, green, blue or even purple. Norman and Tegan go through the rainbow to assess where there's evidence, and where there's not. References: • Sweaty sauna bathing for better health - What's That Rash? • Near Infrared Photoimmunotherapy: A Review of Recent Progress and Their Target Molecules for Cancer Therapy • Effect of NASA Light-Emitting Diode Irradiation on Wound Healing • Visible Red Light Emitting Diode Photobiomodulation for Skin Fibrosis: Key Molecular Pathways • Utilization of light-emitting diodes for skin therapy: Systematic review and meta-analysis • Photodynamic Therapy Using HMME for Port-Wine Stains: Clinical Effectiveness and Sonographic Appearance • Effect of Blue Light on Acne Vulgaris: A Systematic Review • The efficacy of violet light in the treatment of acne • Featured review: What are the benefits and risks of light therapy for treating atopic eczema? • Light therapy for preventing seasonal affective disorder This episode first aired on December 18, 2024.

Shows are listed from Apple Podcasts' charts and directory, and Podcast Index where it is used. Every show and episode belongs to its publisher and plays from the publisher's own feed; this site hosts none of them.