How RLT Works

Red light therapy works by exposing the skin to red and near-infrared light. This is then absorbed by the mitochondria (the "powerhouse" of cells), stimulating self-rejuvenation by boosting our natural repair mechanisms³.

But why red light therapy and not green light therapy? Why not just sit in front of the sun?

The Problem

Not all light is created equally. While each colour has its uses (for example the HeroMask Elite and Core both have blue settings for its antimicrobial properties which may help with acne), all except for red and near-infrared also come with significant drawbacks.

Colour	Range	Benefits	Drawbacks
UV	10–380nm	Can treat skin conditions, necessary for vitamin D production	DNA damage, cancer
Violet	380–450nm	Antimicrobial	Eye strain, oxidative stress
Blue	450–495nm	Acne treatment, can improve inflammatory skin conditions like psoriasis and eczema	Sleep disruption, eye strain and skin damage
Green	495–570nm	Can combat skin pigmentation	Sleep disruption, metabolic slowdown
Yellow	570–590nm	Improves skin texture and tone	Limited penetration depth, less effective than longer wavelengths
Orange	590–620nm	Skin rejuvenation, improved sleep	None
Red	620–750nm	Stimulates collagen production and cell repair, wound healing & inflammation reduction, increases circulation & muscle recovery, releases melatonin	None
NIR	750–1100nm	Deep tissue healing & muscle recovery, increases ATP (cellular energy), supports brain function & nerve regeneration, reduces pain & inflammation	Above 1000nm increases eye risk (not used in our panels)

The Sun

Light is made of energy waves, with different wavelengths being perceived by the human eye as different colours. The sun, our strongest source of light and the basis for life on Earth, contains all of the wavelengths listed below. But as you've just read, this makes the sun a "double edged sword"; it both heals and harms us.

Another problem with the sun is that modern society requires us to wear clothes. This means even when we go outside most of our body never gets exposed to the red and near-infrared wavelengths contained in the sun.

Wavelength spectrum from UV to IR with frequency waves

Curious about what's above and below this range?

Below Ultraviolet
- Extreme ultraviolet - Just below UV, used in semiconductor lithography and astronomy.
- X-rays - Used in medical imaging and material analysis
- Gamma rays - The highest energy electromagnetic waves, emitted by radioactive materials and cosmic events.
Above Infrared?
- Submillimeter Waves - Used in airport security scanners, medical imaging, and wireless communication research.
- Microwaves - Used in communication (Wi-Fi, radar, satellites) and cooking (microwave ovens).
- Radio waves - Used for broadcasting (AM/FM radio, TV signals), communication (Wi-Fi, Bluetooth), and astronomy.

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The Solution: Red Light Therapy

Red light therapy allows us to get the good parts of the sun without the bad. Our panels expose your skin to red and near-infrared light only - giving you all the benefits with none of the drawbacks.

You can also do red light therapy in the privacy of your own home, allow you to expose your whole body - as we did before the normalisation of clothes!

Unlike sun exposure, which contains a wide range of wavelengths including damaging UV rays, studies indicate red light therapy is safe.

Graphic showing how far different wavelengths of light reach into tissue

Did you know longer wavelengths, like the red and near-infrared (NIR) used in our devices, can penetrate beneath the skin? This is how red light therapy can reach muscles and other deeper parts of the body.

But how should you choose a device?

Both panels and direct on skin devices can be effective red light therapy products. Which is best for you depends on your goals, budget and what will most smoothly integrate into your lifestyle.

Discover the best device for you by following our 6 Step process for choosing a red light therapy device.

Discover the best device for you

And how do you do red light therapy?

One of the best things about red light therapy is how easy it is to incorporate into your lifestyle. For examplle, you can sit, stand or lie in front of your panel while working at your computer, doing yoga, meditating or even streaming shows.

Explore our guide on doing red light therapy at home.

How to do red light therapy