Article source: https://www.litonlaser.com/functions-of-different-color-lights-of-led-phototherapy-machine/
What are the functions of different color lights (red, blue, yellow, green, near infrared) of LED phototherapy PDT beauty machine? Acne removal, hair growth.
PDT skin rejuvenation is also called photodynamic skin rejuvenation or photodynamic therapy, collectively referred to as LED phototherapy. Under normal circumstances, LED phototherapy beauty machines will carry different colors of light, and each light reaches a different depth of the skin, so it has different functions and plays a different role in the beauty industry.