Your hair follicle has an oxygen sensor. When it stops working, hair stops growing.

From Root to Ritual by Laritelle Organic. The hair follicle is one of the most metabolically demanding structures in the human body. It divides faster than almost any other tissue. It requires continuous, high-volume delivery of oxygen, glucose, amino acids, and growth factors to sustain the anagen phase — the active growth period that can last years in a healthy follicle. And like every highly metabolic tissue, it has a molecular system ... Read the full article: https://laritelleorganic.com/blogs/news/your-hair-follicle-has-an-oxygen-sensor-when-it-stops-working-hair-stops-growing