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What light studies found.

Read fifteen skin-light studies one at a time. Each note explains the treatment, the results and the limits. Related masks are examples of devices that list similar light, not products proved effective by that paper.

Summaries of published abstracts · Newest first · Not medical advice

  1. Randomised, sham-controlled, double-blind trial · 2025Two sessions or three? A red-mask trialA sham-controlled study found only modest changes.
  2. Randomised split-face trial · 2023Red or amber light for eye-area wrinkles?Both colours were tested at the same dose.
  3. Prospective controlled study · 2020Does a home mask add to a serum routine?A four-week study of a mask used with hyaluronic acid.
  4. Randomised animal study · 2020Red and near-infrared light on skin grafts in ratsAnimal wound-healing research, not a face-mask trial.
  5. Systematic review of randomised controlled trials · 2018What a review of 31 LED trials foundA 2018 review compared the strength of the evidence.
  6. Narrative review · 2017Why the amount of light mattersA review of how red and near-infrared light affect inflammation.
  7. Narrative review · 2015Near-infrared light after cosmetic treatmentA review of recovery research using 830 nm light.
  8. Randomised controlled trial · 2014Did a wider light spectrum help more?Red-only light compared with a broader range.
  9. Narrative review · 2013How light therapy may affect skinA broad review of possible uses and mechanisms.
  10. Laboratory study plus single-blinded split-face study · 2009What pulsed red light changed in skinLab tests followed by a small face study.
  11. Pilot study, uncontrolled · 2009Blue and near-infrared light: mixed acne resultsOnly eleven people completed this small study.
  12. Randomised, sham-controlled, double-blind trial · 2007Can red and near-infrared light reduce wrinkles?A trial with a pretend treatment for comparison.
  13. Uncontrolled clinical study · 2006Alternating blue and red light for acneA small study that also used skin exfoliation.
  14. Uncontrolled clinical study · 2005Red and near-infrared light around the eyesA small clinic study without a control group.
  15. Randomised, observer-blinded trial · 2000Blue and red light for mild to moderate acneA trial comparing light with white light and a cream.

These papers cover light listed by the masks in our directory. Some found small changes or no clear difference. Many tested clinic devices. Sharing a wavelength does not mean a home mask can deliver the same treatment or results.