Terapi cahaya merah berfungsi melalui proses yang dipanggil photobiomodulation. Panjang gelombang cahaya tertentu diserap oleh komponen di dalam sel, yang boleh mempengaruhi cara sel menghasilkan dan menggunakan tenaga.
Researchers have proposed that red and near-infrared light may be absorbed by cytochrome c oxidase, an enzyme in the mitochondrial respiratory chain. Interaksi ini telah dikaji untuk potensi pengaruhnya terhadap metabolisme tenaga selular, inflammatory signaling, dan peredaran.
This matters for usage because light therapy follows a dose-response relationship. Too little exposure may produce no effect, while excessive exposure provides no additional benefit and can unnecessarily warm the skin.
That is why correct session length, ketekalan, and skin exposure are more important than simply staying under the lights for as long as possible.
