Coffee contains caffeine, which is known to stimulate hair follicles and promote blood circulation to the scalp. This increase in blood flow helps deliver essential nutrients and oxygen to the hair roots, which can encourage faster and healthier hair growth.Coffee contains caffeine, which is known to stimulate hair follicles and promote blood circulation to the scalp. This increase in blood flow helps deliver essential nutrients and oxygen to the hair roots, which can encourage faster and healthier hair growth.