One of the most frustrating things to experience as a woman is your hair falling out in handfuls! While managing stress, balancing hormones, and eating a nutrient dense diet are going to be lifestyle keys, there are several vitamins, minerals, and herbs that you want to incorporate. Biotin (vitamin B7) and collagen are highly recommended, along with iron, zinc and selenium. Herbal sources to encourage hair growth include horsetail, rosemary, and stinging nettle. Topically you can treat your hair with straight castor oil or a shampoo that contains a combination of castor and jojoba oils. These oils are very nourishing to both the scalp, and the skin, and can be used head to toe.