
In today’s always-on world, most of us end our evenings scrolling through phones, watching Netflix, or
catching up on late-night emails. What many don’t realize is that these habits flood our eyes with blue
light — the same kind of light our brain interprets as daylight.
The result? Your body’s natural production of melatonin (the sleep hormone) is delayed, your circadian
rhythm is disrupted, and you end up tossing and turning instead of drifting into deep, restorative sleep.
This is where Ziist’s Blue Light Blocking Red Glasses make a real impact.
Blue light (400–500 nm) plays a powerful role in regulating your internal clock. During the day, it boosts
alertness and focus. But in the evening, exposure to blue light:

Unlike regular “blue light glasses” that block only a portion of the spectrum, Ziist’s red-tinted lenses filter out both blue and green wavelengths (400–550 nm) — the exact range most disruptive to your circadian rhythm.
Here’s how they help:
A 2021 systematic review found that wearing blue-blocking glasses before bed significantly improved sleep onset latency and quality, particularly in people with insomnia and circadian rhythm issues (PubMed, 2021).
To get the most from Ziist Blue Light Blocking Red Glasses:
1. Wear them 2–3 hours before bedtime — when you switch on screens or artificial lights.
2. Pair them with dim lighting to mimic natural sunset.
3. Stay consistent — your circadian rhythm adjusts best with regular use.
At Ziist, we believe sleep is not just about closing your eyes — it’s about recharging fully so you can show up as your best self the next day.
Our Blue Light Blocking Red Glasses are a science-backed tool to help you reclaim your nights, naturally.