Hair follicle weakening can occur in the scalp’s vascular network when the enzyme 5-alpha-reductase converts testosterone to dihydrotestosterone (DHT). DHT disrupts the binding of essential proteins and nutrients to cells in the follicle. In time, this lack of nutrients leads to a weakening of the hair in the follicular site.

Regeneration of new and healthier cells in the scalp can increase hair quality, hair thickness and hair regrowth. Bio-stimulation using lasers at 650nm and 670nm wavelengths are reported to increase nutrient transport and cellular ATP production of cells in the inter-membrane space of the scalp. Furthermore, increased ATP synthesis dramatically increases the mobilization of calcium ion (Ca2+) stores and cell signaling cascades that lead to increased protein production, intracellular nutrient acquisition and cell proliferation. This process ultimately leads to a decrease in DHT-dependent disruption of follicular protein and nutrient loss and to the maintenance of healthy scalp hair.