Understanding the Mechanism: How Red Light Therapy Stimulates Hair Follicles

Red light therapy works by delivering specific wavelengths of light, typically between 630-660 nm, that penetrate the skin and are absorbed by the mitochondria in hair follicle cells. The mitochondria, which act as the cell’s powerhouse, use this light energy to produce more adenosine triphosphate (ATP), which is the main source of energy for cellular processes. This increase in ATP production allows the hair follicle cells to function more efficiently, encouraging them to enter the anagen (growth) phase of the hair cycle .

In addition to stimulating cellular activity, red light therapy increases blood circulation to the scalp, delivering essential nutrients and oxygen to the follicles. This enhanced circulation not only helps promote growth but also improves the overall health of the scalp. Red light therapy can also reduce inflammation, which is often a contributing factor to hair loss. Together, these effects create an environment that supports stronger, healthier hair growth.