What are the therapeutic differences between Blue Light (LED Phototherapy) and Red Light modes in acne treatment, and how do they affect the skin?

LED phototherapy (light therapy) stimulates cellular activity by sending light energy at specific wavelengths to the skin. Blue light (415 nm) targets “porphyrin,” a substance produced by the P. acnes bacteria that cause acne, initiating a chemical reaction that destroys the bacteria from within; thus, it provides direct antibacterial treatment. Red light (630 nm) penetrates deeper, stimulating the cytochrome c oxidase enzyme, increasing ATP (cellular energy) production, accelerating blood circulation, and reducing inflammation (swelling), thus promoting faster tissue healing and preventing acne scarring. Acne protocols often combine both.