Red Light Lamp for Sleep: Why Night-Time Lighting Matters More Than You Think

In a recent Huberman Lab podcast with vision scientist Dr Glen Jeffery, one thing became very clear – when it comes to a red light lamp for sleep, wavelength matters, not just brightness.

Short-wave light (the blue-heavy light common in screens and many LEDs) sends a strong daytime signal to the brain. At night, that signal can interfere with melatonin production and keep the nervous system alert when it should be winding down.

Long-wave light, on the other hand, is a different story.

Red and warm wavelengths sit at the gentler end of the light spectrum. They’re far less disruptive to the body’s internal clock and are better aligned with how our biology expects evenings and nights to feel.

That’s exactly where Somni comes in.

The three Somni light modes – explained simply

Red Light (630nm)
This is the most circadian-friendly option.
It sits firmly in the long-wave range and is least likely to disrupt melatonin, making it ideal for night-time use, overnight wake-ups, or moving around the house without fully waking your body up.

Pink Light (2700K + 630nm)
A softer blend designed for gentle wind-downs.
It combines warmth with a touch of red, creating a calming, low-stimulus glow that feels reassuring rather than alerting.

Warm White Light (2700K)
Cosy and familiar.
Perfect for relaxed evenings before bed when you still want comfort and visibility, without the harshness of cool or blue-heavy light.

Why this supports better sleep (and overall wellbeing)

Light is one of the strongest signals your brain uses to decide:

• when to feel awake
• when to slow down
• when it’s safe to sleep

By choosing long-wave, warm light in the evening, you’re reducing unnecessary stimulation and supporting your natural circadian rhythm – instead of constantly overriding it.

Somni isn’t about brighter lights or doing more.
It’s about using the right light at the right time, so your body doesn’t have to work against your environment.

Small shifts.
Gentler nights.
Better sleep, starting with light.

Better Nights Start Here.