Antibacterial, Antifungal, Antiseptic Shampoo for Dogs and Cats. Active Ingredients (w/v): Chlorhexidine Gluconate 2%. ProHex is a cleansing shampoo indicated as an aid in the treatment of superficial skin conditions caused by bacteria, fungi, ringworm, and yeasts which may respond to the activity of chlorhexidine. ProHex shampoo is antibacterial, antifungal and antiseptic and is indicated for dogs and cats.