History
CELLRETURN has been preparing for the future by looking back to the past and present of the Light Therapy, which has been around for 160 years.

Niels Ryberg Finsen
Niels Ryberg Finsen
Beginning of Light Therapy
He was the Danish medical practitioner who greatly contributed to the treatment of lupus (skin tuberculosis) by developing an artificial lamp that mimics the sun’s light and studying the biological and therapeutic effects of light rays. His studies paved the way for the beginnings of the Light Therapy.

Endre Mester
Endre Mester
Discovery of Low `Power Phototherapy
He was the Hungarian doctor who discovered the effect of a low-power laser on wound healing, fibromyalgia, etc., while conducting experiments with a red low-power laser. Since then, he treated skin ulcer patients and wrote over 100 papers, paving the way for the beginnings of low-power phototherapy. He has come to be regarded as the father of light bioregulation.

Nick Holonyak
Nick Holonyak
Discovery of Red LED
He was the American scientist who invented the first red visible-light LED and continued research on visible-light semiconductor lasers and light-emitting diodes to develop a four-element compound semiconductor. Today, his technology is being used in a variety of applications, including medical diagnostic equipment, surgery, and ophthalmology.

AT&T Bell Labs
AT&T Bell Labs
Realization of Green LED
After the red LED was invented, a green LED was realized from the gap p-n junction with nitrogen added by Logan, et al. Through this, we have secured the technology to realize most of the colors that can be obtained from nature with light.

Shuji Nakamura·Isarmu Akasaki
Hiroshi Amano
Shuji Nakamura·Isarmu Akasaki Hiroshi Amano
Discovery of Blue LED
He was the Japanese professor who created the basis for the blue semiconductor laser after developing the first blue LED. He continued to develop blue LEDs and won a Nobel Prize in Physics in 2014.

NASA
NASA
LED utilization that was expanded from NASA to the medical field based on its various effects
While researching how to grow crops in a spacecraft with artificial light sources, it discovered the fact that the red LED wavelength promotes energy metabolism in cells, which activates plant growth and photosynthesis, and that irradiating LEDs of a specific wavelength doubles cell growth, which accelerates the healing of wounds. This led to research on LED as a medical technology that helps skin cells regenerate, which paved the way for its utilization in various medical fields.

CELLRETURN offers an
innovative paradigm
for LED devices
CELLRETURN offers an innovative paradigm for LED devices
With the release of devices that utilize LED with various effects, LED has naturally become part of people’s lives. The limitless possibilities and effects of LED from beauty to medical fields mean that there are exciting developments waiting in the future. Now, CELLRETURN aims to become the world’s no. 1 beauty, healthcare, and medical-device leader by realizing true beauty and healthier life for humankind through LED.