The Most Effective Night Light for Promoting Better Sleep


Tired of flipping light switches and tripping over the dog at night? We get it. Climbing out of bed to turn on the lights is inconvenient, somewhat jarring, and can make it difficult to return to sleep. Fortunately, there’s a new solution for illuminating your surroundings without disrupting your circadian rhythm. Introducing the TrueLight Luna Red night light and flashlight — a motion-sensing device that minimizes brightness and uses specific wavelengths of light to help keep your sleep/wake cycle on track.

How Light Influences Your Sleep

Your body perceives light and darkness through the eyes, which contain blue-light-sensitive cells called intrinsically photosensitive retinal ganglion cells, or ipRGCs. These cells are directly responsible for communicating how bright it is in the environment to the brain’s master clock. 

It’s no coincidence that humans systematically rest at night when it is dark outside.  As the sun descends below the horizon each evening, the color temperature of the sky changes accordingly, and your body begins to produce melatonin – the key ingredient (hormone) for falling and staying asleep. Resting in a cave-like environment (like our ancestors used to) is essential for helping the body wind down and recover overnight.

Source: The New York Times

How the Lighting Revolution Has Affected the Way We Sleep

For many centuries, humans relied on candlelight at night. Then came the development of incandescent bulbs. These light sources emit warmer light (reddish in color), which is conducive for illuminating the space at night around you without affecting your sleep.  

Today, we not only have new advances in lighting technology (thanks to fluorescent and LED bulbs), we also have greater exposure to it. In fact, many people — labeled as the “Indoor Generation” — spend as much as 90% of their time indoors under artificial lighting and/or using digital devices with LED screens. These light sources emit “cooler” light (bluer in color) that mimic daylight, when the sun is at its highest point in the sky.  Given that blue light promotes alertnessexposure to blue wavelengths at night is not ideal. 
See the chart below which shows the spectrums of different light sources:

Source: Nature

How the TrueLight Nightlight + Flashlight Supports Your Sleep

If you need to illuminate your home at night, the key is to use warmer, redder wavelengths. These are the most effective option because they have a low color temperature — far lower than regular sunlight. This means that you can immerse yourself in red light at night without feeling disoriented or altering your internal clock in the way that exposure to blue light would 

The TrueLight Luna Red nightlight/flashlight emits red light by design to help preserve your body’s melatonin production and promote better sleep.  The device features motion and dusk-to-dawn sensors that automatically shut off with the presence of light. For your convenience, this nightlight can also be used as a flashlight – allowing you to walk around your house late at night without bumping into things or disrupting your sleep.  

This product is ideal for:

  • Bathrooms
  • Hallways
  • Nurseries
  • Bedrooms
  • Travel
  • Outdoors and camping

Light and Sleep: The Bottom Line

“Lights out!” at night isn’t just a pastime; it is necessary for regulating your circadian rhythm and hormones.  In a world where the lights are always on, it’s important to be mindful of their color temperature and brightness, especially in the hours leading up to bedtime. With that said, red light is an appropriate option for those that need to get up in the middle of the night. The TrueLight Luna Red nightlight/flashlight allows you to navigate in darkness without negatively impacting your sleep and circadian rhythm.

Junk Light, Disrupted Sleep, and Your Health

Exposure melatonin disrupting junk light can have have effects on many aspects of your health

Sleep cycle disruption

Junk light exposure when traveling can disrupt your circadian rhythm. Long-term exposure to light at night which accompanies shift work is listed as a probable carcinogen by the World Health Organization. Light at night has shown to be highly associated with significantly the risk of hormone specific such as cancers of the breast and prostate.


The flickering wavelength of light associated with LEDs and compact fluorescent lights emit blue light that inhibits melatonin production but also create a unique glare that impacts your retina causing eye strain, headaches, and physical and mental fatigue.

Weight Gain

Red light and darkness move leptin and ghrelin into patterns that are (context dependent) associated with less hunger, while blue light does the opposite and can move both into patterns associated with more hunger.

Anxiety/Depression & Depression

Increase in cortisol, the stress hormone, due to circadian disruption. Memory recall is impaired with consistent sleep deprivation and may leave you distracted and not performing your absolute best.

The Importance of Melanopsin Cells

The Key to Better Sleep

detects blue light

The melanopsin cells detect blue light it tells your brain that it is “daytime” and less melatonin is produced.

sending signals to your brain

The signals to your brain to alert brightness and for the brain to increase or suppress the sleep hormone, melatonin.

Light Source

Melanopsin cells can’t differentiate the blue light that occurs naturally form the sun from the junk light emitted from your computer monitor.

Start Optimizing Your Life

Harness Your Biology to Fight Junk Light

Your body requires some blue light at the right time of day and from the right sources. That’s why we created TrueDark® Sleep Technology that gives you 24-protection from junk light day and night.

Use TrueDark® Twilights When You’re Ready for Sleep

Stop Junk Light with patented TrueDark® Twilights technology that frees your hormones and neurotransmitters to do their best work.

When the sun goes down, blue light isn’t the only junk light that can disrupt our sleep cycle and more than blue blockers are needed. Patented TrueDark® Twilights is the first and only solution that is designed to work with melanopsin, a protein in your eyes responsible for absorbing light and sending sleep/wake signals to your brain. Without melanopsin, melatonin can’t be accessed.

When you wear your Twilights for as little as 30 min before bed you prevent your melanopsin from detecting the wrong wavelengths of light at the wrong time of day. This supports  your circadian rhythm and helps you fall asleep faster and get more restorative and restful sleep.

glasses to help with computer eye strain computer glasses

TrueDark® Daylights for Your Waking Hours

The highly advanced lenses in TrueDark® Daylights operate on a more advanced level than traditional blue blockers.

Blue light emitted from the sun helps regulate our sleep/wake cycle. However, in today’s world, we’re exposed to an overabundance of blue light, or junk light from artificial light. This includes hours spent in front of  TVs, phones, and computers. It also includes time spent in artificial man made light with LEDs and fluorescent lights. Even if we’re simply reading a book, we’re doing that in artificial light which emit dramatically more blue light than the sun. That overexposure to junk light during the day has a dramatic impact on our neurotransmitters and hormones that are responsible for quality sleep.

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