Genetics also play a role. Giving your scalp and hair follicles the proper nutrition and vitamins can help relieve hair loss and possibly even help hair to re-grow. Vitamins Good for Hair Loss 1. Vitamin A. Vitamin A regulates retinoic acid at the level of the hair follicle. This helps hair to grow and can also be good for the skin. Vitamin A can be taken as a supplement, in foods or rubbed into the scalp and hair in liquid form. For vitamin A, eat foods such as carrots, sweet potatoes, paprika, butternut squash, apricots and cantelope.