A science paper published in 2014 explored the effectiveness of photobiomodulation (PBM) using novel polychromatic light sources vs red light for skin rejuvenation. The study investigates how non-thermal red and infrared light can improve skin appearance and stimulate collagen production, offering a gentler and more effective alternative to traditional skin rejuvenation methods like laser resurfacing or intense pulsed light (IPL). The study also compares red/infrared light therapy versus green, yellow and orange light therapy, in terms of skin rejuvenation (fine lines, wrinkles, skin roughness and skin collagen content)…
Is yellow LED any good?
LED light therapy has gained huge popularity in the last few years, with a plethora of machines, from high-end and super effective to low-end and practically useless and each of them employing different intensities and wavelengths. Blue, red, near infrared light, ~415nm, ~630nm and ~830nm, respectively, are proven to work by literally thousands of studies. However, for the yellow wavelengths (570-590nm) there is only a handful of studies…