SLEEP Red Light Bulb E27 | Blue Light Free Lighting

Peaceful SLEEP Red Light Bulbs for Homes Where Bedtime is Hard

The SLEEP Red bulb replaces your general household lighting (often referred to as white lighting) with a Peaceful Red glow containing no blue light at all.

It screws into your normal lamp, your bedside light, your hallway fitting, or your child’s nursery. You can still read, settle a child, or get up in the night — without telling your brain it’s the middle of the day while you do it.

Our customers use it for the kind of evenings where bedtime isn’t simple. Children who won’t settle. Children prescribed melatonin who still don’t sleep. Teenagers wired until midnight. Adults who lie awake under the same ceiling light they’ve had on all evening.

Where to use SLEEP Red Light it in the home

• Children’s bedrooms and nurseries
• Adult bedrooms and bedside lamps
• Hallways and landings, for night-time wake-ups that don’t reset everyone’s body clock
• Living room lamps in the hour or two before bed
• Bathrooms in the evening
• Bedside reading lamps

This bulb fits any standard E27 large-screw light fitting and is E26 compatible for US-style lamps. For bayonet fittings, see the B22 version. For smaller candle-style fittings, see the E14 candle bulb.

Q. Are all red light bulbs the same?

A. No. The majority of “red” or coloured bulbs still contain blue or green light, particularly tinted, coated, or smart bulbs. Our specialist healthy lighting emits red light only, with no blue or green wavelengths at all.

Learn more about healthy lighting with our free downloadable healthy lighting guide.

In-home lighting consultations are available in Bristol and the surrounding area.

Who uses SLEEP Red lighting?

Sleep Difficulties

Many of our customers come to us simply because they’re not sleeping well and have realised their evening lighting is part of the problem due to blue light content. Standard household lighting contains approximately 25-35% blue light, which signals daytime to the brain and suppresses melatonin.

Harvard Medical School specifically recommends “dim red lights for night lights“ because red light is far less likely to suppress melatonin or shift the body clock.

Households Managing Mental Health or Neurodivergence

A lot of our customers are managing mental health conditions or neurodivergence – often both, as the two frequently overlap. That includes anxiety, depression, PTSD, autism, ADHD, dyslexia, dyspraxia, and global developmental delay. Sleep is one of the first things to be affected in either case, and evening lighting is one of the most overlooked factors working against it.

Sensory sensitivity to light is common across both groups. Many of our customers notice the difference removing 100% blue and green light makes in the hours before bed – the room signals night, the body follows, and sleep comes more easily. Read more about neurodivergence and evening lighting →

Families using Melatonin

Many of our customers are families whose child, or parent has been prescribed melatonin. What the prescription doesn’t come with is a conversation about lighting homes in the evening, as evening light is one of the main factors working against melatonin, both the medicine and the body’s own production.

A peer-reviewed study found that melatonin suppression from artificial light is greater in children than in adults, and significantly worse under cooler, bluer/general lighting (see sources below). Read more about melatonin and evening lighting →

CHIRYŌ Light Therapy Peaceful Red Light vs Sunset Amber Light

Both SLEEP Red and RELAX Amber remove 100% blue light from your evening lighting making it safer for your brain and eyes. The difference is how late you use them.

• RELAX Sunset Amber is lighter in colour than Peaceful Red, therefore people find it easier to replace their general household lighting when needing illumination. Most people use it across the home from late afternoon onwards, in living rooms, kitchens, and utility rooms. A comfortable first step away from white light.
• SLEEP Peaceful Red goes further by removing green light as well as blue, leaving a Peaceful Red glow that the brain reads most clearly as night. Typically chosen for the last part of the evening: bedrooms, nurseries, hallways, bedtime reading, mood-lighting, and night-time wake-ups.

Many customers use both. Sunset Amber through the evening for illumination, Peaceful Red in the bedroom from an hour before sleep.

Healthy Lighting Sources & Further Reading

CHIRYŌ Light Therapy: Healthy Lighting FREE downloadable guide healthy lighting guide

Peer-reviewed spectral measurement: LED vs cool white fluorescent lighting Standard LED household lighting measured at 35.8% blue light. researchgate.net

Harvard Medical School: Blue light has a dark side “Use dim red lights for night lights. Red light is less likely to shift circadian rhythm and suppress melatonin.” Harvard researchers also found blue light suppressed melatonin for about twice as long as green light of comparable brightness. health.harvard.edu/staying-healthy/blue-light-has-a-dark-side

National Institutes of Health: Children’s melatonin and LED lighting Study found melatonin suppression in children was greater than in adults, and greater again under cooler-temperature lighting. The researchers recommend warmer, lower blue-content lighting in the evening for children’s sleep. ncbi.nlm.nih.gov/pmc/articles/PMC6295443

Physicians for Safe Technology: Sleep, melatonin and light at night A doctor-led summary of the research on evening light and sleep, including the Harvard study and the Chang et al. study showing reading on a light-emitting device for four hours before bed produced 55% less melatonin than reading print. mdsafetech.org/melatonin-and-light-at-night

National Institutes of Health: Measuring blue light’s circadian effect (CIE S 026 standard) The international standard for measuring light’s impact on the human body clock, weighted to the eye’s blue-cyan sensitivity peak around 490nm. ncbi.nlm.nih.gov/pmc/articles/PMC12693798

About CHIRYŌ Light Therapy

CHIRYŌ Light Therapy is a UK brand based in Bristol, specialising in blue-light-free home lighting and LED light therapy devices. The Healthy Lighting range was developed by a founder with approximately twenty years of professional experience working with autistic and neurodivergent individuals, from mental health support through to present day, after seeing first-hand how rarely families are given practical, environment-based tools to support sleep and health.

In-home lighting consultations are available in Bristol and the surrounding area.

This product is general household lighting designed to support a low-blue-light evening environment. It is not a medical device and is not intended to diagnose, treat, or replace any medication or clinical advice.

Reviewed by CHIRYŌ Light Therapy May 2026 – Specialists in Healthy Lighting and FDA-cleared blue, red, and near-infrared LED light therapy devices.