Hairnets, bouffants and beard covers prevent contamination in sanitary environments. They are commonly used in the food service, medical and manufacturing industries. Hairnets and bouffants cover workers' scalps. Hairnets are typically made of lightweight mesh that gathers and secures hair to prevent contamination. Bouffants are larger than hairnets and are made of solid materials like nylon and polypropylene. They are used in cleanrooms to secure loose hair and protect the scalp from fluid splashes and other contaminants. Beard covers run just under the nose or mouth down to the neck. They fasten to a worker's ears via elastic loops. Beard covers protect a worker's face and neck from dirt or fluid splashes and prevent loose hair from contaminating the environment.