Beard oil is a grooming product designed to moisturize and condition both the beard hair and the skin underneath, helping to prevent itchiness, dryness, and flakiness, while also promoting a softer, healthier-looking beard. It typically consists of a blend of carrier oils and essential oils, chosen for their hydrating and nourishing properties. 
Beard oil moisturizes the skin beneath the beard, preventing dryness and itchiness. 
It helps to soften and tame coarse beard hair, making it more manageable.
The moisturizing and antimicrobial properties of some essential oils, like tea tree oil, can help to reduce beard itch and dandruff. 
Beard oil is a popular grooming product for men with beards, offering a simple yet effective way to maintain a healthy, soft, and well-groomed beard.