TropiClean Dander Reducing Waterless Cat Shampoo 7.4 Dander is just part of the relationship we accept with our beloved frisky friends. Not anymore. Our dander Reducing Waterless Cat Shampoo helps freshen and reduce dander between baths, no rinsing required. Regular use of our mild coconut cleanser greatly moisturizes and reduces allergens, leaving both you and your feline happy and healthy.