How long has red light therapy existed?

Red light therapy may seem like a modern wellness trend, but its origins actually date back several decades.

The scientific foundation began to take shape in the late 20th century, particularly during research conducted in the 1980s and 1990s. One of the most notable milestones came from experiments conducted by NASA, where scientists were studying how light could be used to stimulate plant growth in space. During these studies, they observed that certain wavelengths of light also had positive effects on human tissue.

This discovery led to further research into what is now known as photobiomodulation. Over time, clinical studies expanded into areas such as wound healing, pain management, and dermatology.

In the early stages, the technology was primarily used in medical and research settings. Devices were expensive, bulky, and not widely accessible to the general public.

It wasn’t until advancements in LED technology that red light therapy became more practical for everyday use. LEDs made it possible to produce devices that were smaller, more affordable, and efficient—leading to the rapid growth of the consumer market.

So while it may feel like a recent trend, the science behind red light therapy has been developing for over 30 years. What’s new is not the concept itself, but its accessibility and widespread adoption.