Application of periplaneta americana effective part extract in preparation of hair growth product

The invention discloses an application of a periplaneta americana effective part extract in preparation of hair growth, hair blackening and hair care products or functional compound products, and belongs to the technical field of medical application. A modern separation and purification process is adopted to treat a periplaneta americana alcohol extraction degreased extract to obtain a part sample, a mouse is injected with dihydrotestosterone to establish a model, and an effective part extract with a good hair growth activity effect is successfully screened out. The extract can remarkably shorten the time of hair growing out of the body surface of a mouse unhaired area, prolong the growth cycle of the mouse hair, promote generation of subcutaneous melanocytes of the mouse, remarkably improve the content of superoxide dismutase and glutathione peroxidase in skin tissue of the mouse unhaired area, reduce the content of malonaldehyde in the tissue of the unhaired area at the same time and improve the curative ef