MELALIGHT Science & Research Overview
A Good Night Begins With Better Light
The Science Behind MELALIGHT
MELALIGHT is grounded in emerging research around light exposure and circadian biology. It uses a precise 660 nm red light wavelength designed to support your body's natural transition into rest.
660 nm sits within the deep red portion of the visible light spectrum (630–670 nm). It is one of the most widely studied wavelengths in red light research and is known for being both biologically active and visually gentle.
Why Red Light at Night Matters
Research shows that blue light exposure at night can suppress melatonin, while longer wavelength red light has minimal impact on circadian rhythms.
The Role of 660 nm Red Light in Your Evening Routine
- Melatonin-Conscious SpectrumThis range of red light is widely regarded as more compatible with your body's natural nighttime biology.
- Designed for Evening Light ConditionsUnlike blue-enriched light, it maintains a low, warm glow that aligns with your body's transition into rest.
- Supports a Restful EnvironmentResearch continues to explore how red light exposure in the evening may help promote a more relaxed, sleep-ready state.
The Research Behind Red Light for Sleep
Blue Light and Digital Screens Revisited: A New Look at Blue Light from the Vision Quality, Circadian Rhythm and Cognitive Functions (2024)
Masoud Haghani, Samaneh Abbasi, Leila Abdoli, Seyedeh Fatemeh Shams, Batool Faegheh Baha'addini Baigy Zarandi, Nasrin Shokrpour, Atefeh Jahromizadeh, Seyed Alireza Mortazavi, Seyed Mohammad Javad Mortazavi
Red light: A novel, non-pharmacological intervention to promote alertness in shift workers (2020)
Mariana G Figueiro, David Pedler
Light Modulation of Human Clocks, Wake, and Sleep (2019)
Abhishek S Prayag, Mirjam Münch, Daniel Aeschbach, Sarah L Chellappa, Claude Gronfier
Lights at night: does photobiomodulation improve sleep? (2022)
Audrey Valverde, Catherine Hamilton, Cécile Moro, Malvina Billeres, Pierre Magistretti, John Mitrofanis
Effect of light wavelength on suppression and phase delay of the melatonin rhythm
H R Wright, L C Lack (2001)
Expert Perspectives on Light & Sleep
In this episode of Huberman Lab Podcast, neuroscientist Andrew Huberman discusses how different wavelengths of light may impact sleep, circadian rhythm, and nighttime alertness.
Source: Huberman Lab Podcast — "Using Light (Sunlight, Blue Light & Red Light) to Optimize Health." At approximately the 36:15 mark.
NOTE: Educational reference only. Huberman Lab is not affiliated with or endorsing MELALIGHT.