You often see an Infrared lamp in wellness centers, physiotherapy practices, or simply at home on the bedside table. You immediately feel it getting warm, but what is really happening beneath your skin? In this blog, we take a closer look at how infrared lamps work.
Please note! The text below is not intended as medical advice. This text has been compiled based on our own knowledge, customer experiences and various online sources.
Table of contents
What exactly does an Infrared lamp do?
An Infrared lamp emits invisible Infrared light, usually in the near-infrared spectrum (IR-A). This light converts into heat as soon as it reaches your skin. Unlike an ordinary heat lamp, an Infrared lamp does not heat the air around you, but directly heats your skin and the underlying tissues.
We call this radiant heat or deep heat. Depending on the type of radiation, the lamp can penetrate several millimeters or even centimeters into your body. This gives your body a burst of heat from the inside out, without overheating the surface of the skin.
An infrared panel is therefore much more than just a warm sensation; it is an activating tool that influences processes in your body.
Reading tip: What is the difference between Infrared light and red light?
How does Infrared light work in the body?
As soon as infrared light penetrates your skin, a local increase in temperature occurs in the tissue. This heat:
- Gets the blood circulation going
- Stimulates cellular metabolism
- Promotes the accelerated removal of waste products
- Delivers more oxygen and nutrients to muscles and skin
The light is absorbed at the cellular level by the mitochondria, the ‘power plants’ of your cells. In response, they produce more ATP (energy), allowing your body to recover more quickly from muscle soreness, inflammation, or stiffness, for example.
The lamps therefore do not work superficially, but genuinely influence biological processes.
What types of infrared radiation (wavelengths) are there?
Infrared radiation is divided into three types:
- IR-A (near-infrared, 780–1400 nm): Used most often in infrared lamps. Penetrates deeply into the skin and muscles.
- IR-B (mid-infrared, 1400–3000 nm): Does not penetrate as deeply. Used more in saunas than in lamps.
- IR-C (far-infrared, 3000–10,000 nm): Reaches only the upper layer of the skin. Promotes sweating and detoxification.
Effective results usually depend on IR-A radiation, as this has the greatest effect on muscles, joints, and cellular processes.
Please note! Some infrared lamps combine multiple types of radiation, but in lamps, IR-A is the standard for therapeutic use.
Why does infrared penetrate deeper than ordinary heat?
A traditional heat lamp or hot-water bottle mainly heats the surface of your skin through convection or conduction. The heat largely remains on the outside.
An Infrared lamp works differently. The light consists of waves that shine directly through the skin, without the need for air or contact heat. These waves reach deeper-lying tissue, such as muscles, joints and even bones (with NIR light). It is more intense, targeted, and effective than ordinary heat.
What happens in your muscles during infrared radiation?
The effect of infrared on muscles is one of the main reasons why this technology is so popular. Here is what happens:
- Muscle fibers relax more quickly as the temperature rises
- Waste products such as lactic acid are removed more quickly
- Microcirculation increases: more blood flows to small capillaries
- Muscle recovery is accelerated through an improved supply of oxygen and ATP
Infrared can also provide relief from muscle hardening, muscle tension, or minor inflammation. It works both relaxing and activating, exactly what your muscles need after exertion or stress.
Conclusion
An Infrared lamp works by using near-infrared radiation (IR-A), which penetrates deeply into your skin and muscles. The lamp does not heat the air, but directly heats your tissues, with all the associated positive effects:
- Improved circulation
- Faster muscle recovery
- Pain relief
- Activation of cellular energy
Its power lies in the combination of deep action and biological activation. Whether you are recovering from a workout, dealing with stiff muscles, or simply looking for relaxation: infrared supports your body from the inside out.
