You could open a six-pack and put your feet up to watch your latest Netflix obsession - or you could wash your hair and rinse it with beer for an extra special clean. The combination of hops and alcohol works as an astringent that can getting rid of product build-up and dirt. Shampoo your hair as usual, then rinse with beer warmed to room temperature. Massage deeply with fingertips into scalp to remove all product residue and grime. Now rinse with water then use your regular conditioner to round off.