The human hair follicle (HF) exhibits peripheral clock activity. with knock-down of clock genes (BMAL1 and PER1) prolonging active hair growth (anagen) and increasing pigmentation. Similarly. thyroid hormones prolong anagen and stimulate pigmentation in cultured human HFs. https://www.alarecre.com/NFL-Atlanta-Falcons-Double-Vision-iPhone-13-Pro-MagSafe-Case-p92343/