4.9 ★★★★★ Reviews  –  $5.95 Worldwide Shipping  –  30 Day Satisfaction Guarantee4.9 ★★★★★ Reviews$5.95 Worldwide Shipping30 Day Satisfaction Guarantee4.9 ★★★★★ Reviews$5.95 Worldwide Shipping30 Day Satisfaction Guarantee
Choose your bulbs
The Next-Generation
Better Sleep Bulb

You don't have a sleep problem.
You have a light problem.

Four modes of healthy light — providing the right signals for your body clock, so sleep comes naturally.

Choose your bulbs ↓ From $37
4.9 Rating No App, No Bluetooth 30-Night Rhythm Guarantee

What changes when your light does.

Relaxed Evenings.Release stress and tension
Sleep Comes Easier.Melatonin rises naturally
Sleep Deeper.More restorative, less fragmented
Brighter Mornings.Wake up feeling rested
Daytime Energy.Alert and focused, as nature intended
A Steadier Rhythm.Day after day, effortlessly
Better Sleep Bulb — Day Mode
Day ModeFocused and energised
Day Mode Afternoon Mode Evening Mode Night Mode
The Better Sleep Bulb
2nd Generation — Presale 20% Off
★★★★★ 4.9 · Read the reviews
Four circadian modes from day to night.
Low Blue Light | Added Near-InfraredFlicker-Free | True-to-Life Colour
Choose your fitting
E26 / E27 — ScrewUS, EU & international
BR30 — DownlightComing soon
Choose your pack
Trial — 1 bulb$47$37.60
Save 20% ($9.40)
A simple first step — but one bulb working against every other light in the room can only do so much.
Most popular
Sleep Sanctuary — 3 bulbs$141$112.80
$37.60 per bulb — save 20% ($28.20)
Transform your whole bedroom or wind-down space. Create a consistent light environment your body can actually respond to.
Best value
Rhythm Home — 6+ bulbsFrom$282$225.60
$37.60 per bulb — save 20% ($56.40)
One room helps. A whole home lighting upgrade changes how you live — deeper sleep for everyone, every night.
Or choose your
own quantity
20% off every bulb
How many do I need? Bedroom: 2–3 · Living room: 3–4 · Whole home: 6+
$112.80$37.60 per bulb
You save $28.20 (20% off)
That's only $0.31 per night to transform your space over the next year.
Pre-order — next batch ships late September 2026.
30-Night Rhythm
Guarantee $5.95 worldwide
shipping Works with standard
on/off switches AC 100–240V
worldwide
VISAAMEXPayPalshopPaySECURE CHECKOUT
Trusted by sleep experts
Prof. Sean W. Cain
Professor
Sean W. CainLeading Circadian Researcher
Scientific Advisor to In Rhythm
"People are far more sensitive to evening light than we once assumed. The Better Sleep Bulb reduces blue light at night, which is one of the most impactful changes you can make for melatonin and sleep."
Professor Sean W. CainLeading Circadian Researcher
Scientific Advisor to In Rhythm

Light isn't just for seeing. It's how your body clock tells the time — controlling when melatonin rises.

For most of human history, changes in natural light
guided you into deep sleep, effortlessly.

Daylight — energised you
Sunset — calmed you
Firelight — signalled sleep
Darkness — restored you

When the right light signals arrive at the right times, sleep follows naturally.

Regular LEDs fill your home with the same bright, blue-rich light from day to night.

In the evening, this suppresses melatonin and disrupts your sleep.

Why has nothing else fixed your sleep?

Most sleep solutions ask you to do more — more routines, more discipline, more supplements, more tracking.

The Better Sleep Bulb changes the thing your biology actually responds to:
your light environment.

No routines.
No discipline. No guesswork.
Just better sleep,
at the flick of a switch.

Four modes. One full day.

Designed to mirror nature's daily light pattern — providing the right light cues at the right times of day — so your home supports your sleep instead of working against it.

Flick your normal switch to move through the modes — no app, no remote, no Bluetooth.

Select Mode:
Room in selected mode
Spectral power distribution vs natural light
Use approximately 8 AM – 3 PM
Day Mode4000K · 100% BrightnessFocused and energised
Your bodyCortisol rises, melatonin clears — your clock is listening for a strong daytime signal.
The bulbBright, cool-white full-spectrum light with the balanced blue light your body clock needs to register daytime and increase alertness, energy and focus.

Light that works with your rhythm.

One day in rhythm — cortisol and melatonin curves mapped to the four modes One day in rhythm — cortisol and melatonin curves mapped to the four modes
Illustrative of a typical daily cortisol and melatonin rhythm, and how the bulb's modes could keep your indoor hours in rhythm.
No artificial light can replace sunlight — natural morning and daytime light are your key daily signals.

Everything modern lighting took away, this bulb brings back.

Balanced blue light spectrum
Balanced blue light

The right amount and timing of blue light — enough to energise you by day, and none in the evening or at night, so melatonin rises as nature intended.

Near-infrared
Near-infrared in every mode

Every mode restores near-infrared up to 1000nm — the deeply restorative wavelengths of light linked to cellular energy, recovery and lower inflammation.

Flicker-free
Flicker-free steadiness

Regular LEDs flicker up to hundreds of times per second. You can't see it, but your nervous system has to process it. Our driver is flicker-free, providing a steady, calm and relaxing light.

True, natural colour
True, natural colour

High colour rendering (CRI ≥92 in Day and Afternoon, ≥97 in Evening) so skin, food and your home look the way they would in natural light.

Better Sleep BulbRegular LEDSmart bulbsRed "sleep" bulbs
Four circadian modes✓✗Partial✗
Near-infrared in every mode✓✗✗✗
Flicker-free driver✓✗✗Varies
Blue-light-free night mode✓✗Partial✓
No app or programming needed✓✓✗✓
Lights your whole room✓✓✓Dim only
Circadian coverageFull dayNonePartialNight only

Rated 4.9 by verified buyers of the Better Sleep Bulb

Reviews of our 1st generation. The 2nd adds a brighter Day mode — the original is now Afternoon.

Infrared: the missing half of indoor light.

More than half of sunlight's energy arrives as invisible infrared light — the most restorative part of natural light. It penetrates deeper into the body than any visible wavelength, where research links it to cellular energy production, lower inflammation, and recovery and repair.

It matters even at room-lighting levels. When researchers added near-infrared to ordinary ambient lighting, people's heart-rate variability improved — a key marker of nervous-system recovery — along with their feelings of pleasure in the space.

Study: Penn State University →

Spectral irradiance 380–1000nm comparing daytime sun, In Rhythm Day Mode and a regular LED. Sun and Day Mode both carry substantial energy through 750–1000nm near infrared; the regular LED falls away after 600nm and reaches zero by around 800nm.

The Better Sleep Bulb builds near-infrared back into every mode, so your light feels warmer, deeper and more restorative. Regular LEDs contain none of it.

Start with the bedroom. Change the whole house.

Most people start with their bedroom or wind-down environment, then bring the rest of their home into rhythm.

Build your Sleep Sanctuary ↑

Everything else you might wonder (FAQs)

What are the technical specifications?
Size & fitting: A-Shaped E26/E27 screw — fits standard sockets, lamps and ceiling fittings (BR30 and retrofit recessed to follow)
Modes:
  Day — 4000K · CRI 93 · 100% Brightness
  Afternoon — 2500K · CRI 93 · 100% Brightness
  Evening — 1800K · CRI 98 · 70% Brightness
  Night — 1000K · CRI 66 · 40% Brightness
Input voltage: AC 100–240V, 50/60Hz · Power: 10–15W
Driver: flicker-free (0Hz measured) · Beam angle: 230°
Memory: returns to the last-used mode after 10+ seconds off
Lifetime: 30,000 hours · Warranty: 12 months
Compliance: FCC Part 15 · CE · UKCA · WEEE · RoHS
For indoor use only. For use with standard on/off switches. If installed on a dimmer circuit, keep the dimmer at its maximum setting.
Which fixtures and switches does it work with?
Standard on/off wall switches, pull cords and lamps. Avoid dimmers where possible (if unavoidable, keep at full brightness). Not compatible with all touch-controlled lamps and twist/rotary lamps — they don't deliver the clean on/off the mode-cycling needs.
How do I change modes?
Flick your normal switch off and on to transition the bulb to the next mode. If left off for over 10 seconds, it returns to your last-used mode. No Bluetooth, remote or app required.
How is this different from cheap red or amber sleep bulbs?
Single-colour red or amber bulbs give you one (often brightly lit) tone for one moment of the day. The Better Sleep Bulb contains four research-backed circadian modes to match the time of day, with near-infrared in every mode, a flicker-free driver and true colour rendering — optimal lighting for every time of day.
Does it replace my normal bulbs?
Yes — it fits any standard A-shaped bulb E26/E27 socket. Swap it in like any other bulb.
Is it safe for children and babies?
Yes. No UV, no flicker, no smart-control EMF, and Night mode is ideal for nighttime feeds and check-ins without waking anyone's biology.
When will my pre-order ship? (and customs / international)
This is a pre-sale. Orders placed now are reserved from our next production batch, shipping late September 2026. Once it lands, orders leave our US or international fulfilment facility within 24–48 hours. For most destinations duties are handled in advance; where local charges apply, they're set by your government. AC 100–240V works in every country.
What's the guarantee?
30 nights. If it isn't the most comfortable, calming light in your home, contact us and we'll make it right. Includes 12-month warranty.
Will there be other shapes and fittings?
Yes — BR30 and retrofit recessed fittings are next.

Try risk-free for 30 nights.
Your body will tell you the difference.

If the Better Sleep Bulb isn't the most calming light in your home, we'll make it right — no questions, no hassle.

Choose your bulbs ↑
30-Night Rhythm Guarantee · 12-month warranty · $5.95 worldwide shipping

Sleep, made effortless.

Our StoryThe Science ResearchLife In Rhythm CourseBecome an Affiliate
ShippingReturns & WarrantyTermsPrivacyContact
© 2026 In Rhythm · Circadian Healing Ltd.
Better Sleep Bulb 2nd Generation
★ 4.9