What you should know about the history of light therapy

What you should know about the history of light therapy

At-home skin-care routines have really leveled up over the past few years, especially in the tool arena, and no skin-care gadget is as intriguing as the LED light-therapy mask.

The LED mask may make you look like a Transformer for a while, but the result is worth it. You may be familiar with the professional LED light therapy of a dermatologist, but “LED masks are the latest technology in home remedies for acne treatment and rejuvenation,” said Shauna Diggs, MD, a dermatologist who works with Lumenis Laser Aesthetics. "These masks use visible light beams to reduce bacteria, reduce inflammation and improve cell activity, increase skin elasticity, and activate collagen."

Looking back at the past and present of phototherapy, it has been in existence for 160 years.

In 1860s,

Niels Ryberg Finsen

The beginning of phototherapy

He is a Danish doctor who has made a great contribution to the treatment of lupus (skin tuberculosis) by developing light. He is called the father of photobiomodulation.

In 1903s,

Endre Mester

The discovery of low-power light therapy.

He is a Hungarian doctor. He discovered the effects of low-power lasers on wound healing and fibromyalgia during experiments with red low-power lasers. Since then, he has treated patients with skin ulcers and written more than 100 papers, paving the way for the beginning of low-power light therapy. He is known as the father of light bioregulation.

In 1928s,

Nick Holoniak

Discovery of the red LED

He is an American scientist. He invented the first red visible light LED and continued to study visible light semiconductors. His technology is suitable for a variety of applications, include medical diagnostic equipment, surgery and ophthalmology.

In 1971s,

AT&T Bell Labs

The realization of green LED

After the invention of the red LED, Logan et al. realized the green LED by adding nitrogen to the gap p-n junction. Through natural light.

In 1989-1990s,

Shuji Nakamura·Isarmu Akasaki Hiroshi Amano

Discovery of Blue LED

He is a Japanese professor. After developing the first blue LED, he laid the foundation for blue semiconductor lasers. He continued to develop blue LEDs and won the Nobel Prize in Physics in 2014.

In 2020s,


Based on its various effects, expand from NASA to LED applications in the medical field

When studying how to grow crops in a spacecraft with artificial light sources, it was found that the red LED wavelength promotes intracellular energy metabolism, thereby activating plant growth and photosynthesis, and irradiating specific wavelength LEDs can double cell growth, thereby accelerating wound healing. This has led to the research on LED as a medical technology that helps skin cell regeneration, paving the way for its application in various medical fields.


HIME SAMA offers an innovative paradigm for LED devices.

With the release of devices that use LEDs to produce various effects, LEDs have naturally become a part of people's lives. The infinite possibilities and influence of LED from beauty to medical field mean that there are exciting developments waiting in the future.

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