A hair kingpin is a small, decorative implement used to secure and style hair. It is a type of hairpin that is typically made of metal or plastic and has a pointed end that is inserted into the hair and a larger, decorative head that holds the hair in place.
Hair kingpins have been used for centuries to create a variety of hairstyles. They are particularly popular for updos or styles that require the hair to be held in place for long periods of time. Kingpins are also a popular choice for people who want to add a touch of elegance or style to their hair.