Why Blood Supply Matters for Hair Follicles
Hair follicles rely on a steady blood supply to deliver oxygen and nutrients. During the growth phase, blood vessels around follicles expand to support rapid cell division. When circulation is reduced—due to inflammation, stress, or miniaturization—growth slows. This is why some treatments focus on improving scalp environment rather than the hair shaft. Supporting vascular health can help follicles stay active longer, which translates to thicker, stronger hair over time.