The body needs protein to grow hair. Growing a beard or just hair in general requires protein because hair is made of keratin that is supplied by amino acids, which come from protein.
The body also needs vitamins such as iron to grow hair. A serious lack of iron can either reduce hair growth significantly or stop hair growth almost entirely.
Beards need to be properly moisturized. The body provides natural oils for beards, but through daily activities such as taking showers, brushing a beard, and washing a beard these natural oils are removed. Therefore, men should use all natural beard soap, shampoo, oil, and conditioners to care for and maintain their beards.
Grooming is very important for the growth of beards. Grooming measures such as combing a beard, cutting split ends, and not pulling beard hair out will help to improve the health and growth of a beard.
Men should massage their beards on a regular basis. Massaging a beard helps to improve blood flow and deliver blood to the hair follicles faster, which provides the iron, amino acids, and other nutrients that are needed for growing a beard.