THE SCIENCE OF LIGHT

Your body runs on sunlight.

For millions of years, one light set your internal clock: the sun. Its color changes across the day and your brain listens to every shift.

SUNLIGHT “Stay alert” DARKNESS “Calm down” NIGHT “Go to sleep” SUNLIGHT “Stay alert” DARKNESS “Calm down” NIGHT “Go to sleep”

Each TrueDark lens is engineered to match one phase of that cycle. Letting through only the colors of light the sun would give you at that time of day.

DAYLIGHTS

DAYLIGHTS

When to Wear:
Morning to late afternoon

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SUNSETS

SUNSETS

When to Wear:
Sunset to bedtime

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TWILIGHTS

TWILIGHTS

When to Wear:
30-60 minutes before bed

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What each lens actually blocks:

Blocks 75% of blue light. Green and beyond pass through freely.

380 450 500 550 600 650 700 750 WAVELENGTH (NM) LIGHT INTENSITY Good blue light!
Bad Junk Light
DAYLIGHTS Vision (Circadian Rhythm Approved)

Blocks blue and most green light. Amber and red pass through to cue your wind-down.

380 450 500 550 600 650 700 750 WAVELENGTH (NM) LIGHT INTENSITY
Bad Junk Light
SUNSETS Vision (Circadian Rhythm Approved)

Blocks blue, green and violet almost entirely. Only red light passes — the one colour that lets melatonin flow.

380 450 500 550 600 650 700 750 WAVELENGTH (NM) LIGHT INTENSITY
Bad Junk Light
TWILIGHTS Vision (Circadian Rhythm Approved)
NEWDaylights® Lucid
Daylights® Lucid $149.99
Daylights® Aviator (Transition)
Daylights® Aviator (Transition) $149.99
Daylights® Monaco (Transition)
Daylights® Monaco (Transition) $149.99
Daylights® Fitovers
Daylights® Fitovers $119.99
SHOP DAYLIGHTS

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COMMON QUESTIONS

Each lens serves a distinct biological window. Daylights protect daytime focus, Sunsets prime melatonin production, and Twilights trigger deep sleep onset. The full system is how you get complete circadian support.

Twilights are designed for the final 30 minutes before sleep. For longer evening wear, Sunsets are the better fit, since Twilights reduce light too aggressively for extended use.

Standard blue light glasses filter a narrow slice of the spectrum. TrueDark lenses block blue, green, and violet wavelengths, the full range that disrupts your circadian system, and Twilights are the only pair with published EEG evidence.

A peer-reviewed study published in a scientific journal measured brainwave activity in people wearing Twilights. The results showed a statistically significant shift toward theta waves, the brain state linked to deep meditation and sleep onset, during wear.

Do not drive or operate heavy machinery while wearing Twilights. The deep red tint significantly reduces light transmission, so they are made for indoor, stationary, pre-sleep use only.

The EEG brainwave shift happens in real time during wear, and most people report faster sleep onset within the first week. A fuller circadian reset usually takes two to four weeks of consistent use.