A beard is a collection of facial hair that grows on the chin, cheeks, and neck of humans, primarily males. It is made up of keratin, the same protein found in hair and nails. Beards can vary in style, length, and thickness, influenced by genetics, hormones, and personal grooming choices. Throughout history, beards have held various cultural and social meanings. In some cultures, a beard symbolizes wisdom and maturity, while in others, it may represent religious beliefs, such as in Islam where it is often associated with prophet Muhammad.