Red light therapy is popular for skincare, pain relief, and muscle recovery, but questions about its safety and use remain. Below are science-backed answers to key concerns:
- Is it safe? Yes—2017 Lasers in Surgery and Medicine review shows low-level red/near-infrared light has minimal side effects. It uses non-ionizing radiation (no DNA damage like UV), though sensitive skin may have mild redness. Follow guidelines and consult a provider if unwell.
- FSA-eligible masks? Only if a doctor prescribes it for a specific condition (e.g., acne), per IRS rules (not for general health).
- Eye safety for masks? Safe with built-in protection or goggles—2018 study confirms therapeutic light poses low eye risk; avoid prolonged direct high-intensity exposure.
- Skin burns? Unlikely when used as directed. 600–900 nm wavelengths are non-thermal (no significant heating); overuse may irritate sensitive skin/rosacea.
- Causes acne? No—2009 study shows it (with blue light) reduces acne. Unsanitary devices/overuse may irritate, so keep devices clean.
- Causes melanoma? No evidence—2013 review notes non-ionizing light lacks DNA-damaging energy (unlike UV). Consult a doctor if you have skin cancer history.
- Penetrates clothes? No—fabrics block light (especially dark/thick ones); bare skin is needed for results.
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