Beer is a humectant, which means it attracts and locks moisture to the skin. Adding beer to a bath is a practice that began in the Middle Ages. Well known for its conditioning properties, beer creates a gentle moisturizing lather.
The malt and yeast in beer are rich in B complex vitamins, biotin, pantothenic acid, and trace minerals, which help make skin smooth and supple. Beer has been used to help acne, eczema, and skin infections. The hops in the beer give the soap a nice clean smell with a hint of sweetness similar to honey.
In hair care, beer tightens the cuticle of the hair shaft adding luster, body, and manageability. The proteins from the malt and hops coat the hair and can help repair damage.