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Blue Light Blocking Glasses
Evening light protection
Overview
Amber- or red-lensed glasses worn in the 2 hours before bed. Effective only if they actually block the melanopsin action spectrum — clear "blue-light filtering" glasses do not qualify.
How it works
Filters out 460–480 nm wavelengths that activate the melanopsin photoreceptors responsible for circadian signalling.
Benefits
Melatonin: preserves natural evening release by filtering short-wavelength light.
B
Protocol
- 1Wear them for the 2 hours before your target bedtime.
- 2Choose amber or red lenses, not clear "blue-light computer" lenses.
- 3Combine with dim overhead lighting for maximum effect.
Safety Profile
Research Summary
Effective if they actually block the relevant wavelengths. The marketing is ahead of the product quality on this one — look for amber/red, not clear lenses.
Sources
Last updated: 2026-04-10
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Medical Disclaimer
This is a research summary, not medical advice. Body Signals is an independent research digest — it summarises published research for informational purposes and is not a healthcare provider. Supplements like melatonin, valerian, and magnesium can interact with prescription medications — check with your doctor or pharmacist before starting any supplement. Chronic insomnia may indicate an underlying condition (sleep apnoea, thyroid dysfunction, depression) and warrants a medical evaluation.
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