What’s the best time to wear blue light blocking glasses?
The answer isn't so simple. It depends on the type of light you're trying to block and when your brain needs to focus, relax, or sleep. Not all glasses are created equal. Some block too much light during the day, killing your energy. Others block too little at night, wrecking your sleep.
This guide breaks down exactly when to wear each type of TrueDark lens—daylight, sunset, and twilight—for max focus, better melatonin production, and real brain recovery. Built on EEG-backed science, this isn’t just eyewear. It’s a circadian protocol.
Most people treat light like background noise. But light is one of the most powerful signals your brain receives. The wrong light at the wrong time doesn’t just hurt your eyes—it scrambles your sleep, drains your energy, and dulls your focus. That’s why
TrueDark created a 24-hour light management system. Each lens serves a specific purpose and when used properly, transforms the way your brain performs.
Here’s how to use each lens like a pro.
Daylight Lenses
When to use: Indoors, from late morning to early evening. Especially in offices, airports, classrooms, or anywhere under artificial lights and screens.
What they do: Filter the fatigue-inducing wavelengths (mainly blue) while keeping the good light that fuels focus. These lenses block 75% of blue light—enough to reduce eye strain and brain fog, without tanking your energy.
Who it’s for: Knowledge workers, remote workers, students, gamers, founders, nurses, coders, teachers—anyone who lives in front of a screen or under LEDs.
The benefit: Clearer thinking, reduced screen fatigue, and better daytime energy without going overboard on blocking light your body actually needs.
Filter junk light. Fuel your brain.
Sunset Lenses
When to use: From sunset to bedtime, during screen time, household chores, or evening work.
What they do: These gradient lenses block 99% of blue and violet light and most green light, which signals your brain to start producing melatonin and slow down. They help you ease out of high-alert mode, without crashing into sleep.
Who it’s for: Parents, digital nomads, entrepreneurs, students, frequent flyers, or anyone who wants to decompress without cutting screens.
The benefit: A smoother transition into rest mode, helping your brain start winding down naturally.
Prepare your brain for sleep mode.
Twilight Lenses
When to use: 30–60 minutes before bed—or anytime you want to knock yourself out naturally. Also ideal during jet lag, night shifts, or overnight awakenings (like night feeds).
What they do: Block 99% of all junk light: blue, green, and violet. These lenses deliver full-spectrum light protection to trigger deep melatonin production and a rapid shift in brainwaves from alert (beta) to relaxed (alpha and delta). EEG tests prove they calm the nervous system fast.
Who it’s for: New parents, shift workers, insomniacs, overthinkers, travelers, biohackers, anyone who wants deeper, faster, more restorative sleep.
The benefit: Maximum melatonin release. Faster sleep onset. Brainwave-level relaxation.
Try to stay awake. We dare you.
How to Stack Them for Maximum Results
Morning to Night:
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Daylight Lenses: Start your workday sharp.
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Sunset Lenses: Come down gently from screen mode.
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Twilight Lenses: Send the final signal that it’s time to shut off.
This isn’t eyewear—it’s a protocol. Use it right, and you don’t just block junk light. You reset your biology. You take back your sleep, your energy, and your edge.
TrueDark: Get your light right.