This cleaner is a stain remover for dark circles under dog eyes or under cat eyes. This tear stain remover for dogs or cats removes unsightly stains that persist under the eyes of our animals or other places on the fur. As a preventive measure make daily use of concealer under the eyes of animals to prevent these tear stains. The method of using the eye concealer is to soak a cotton ball and gently apply to the fur around the eye, then wipe off.