Hair follicles initially form during development via recipro…
Hair follicles initially form during development via reciprocal interactions between the epidermis and dermis, initiated by the signaling pathway. The cells of the dermis make the , a clump of cells that induces the proliferation of hair-forming cells. cells contribute pigment to the hair. The stage of the hair cycle in which the hair follicle starts to recede in length as it stops growing new hair is called .