One of my Shih Tzus has bad stains around her eyes and her mouth. She's a black and white dog with a brown-stained face! I tried Angel Eyes but had a very difficult time getting her to eat her food when I added it. I eventually got through one bottle but never saw any improvement at all in the staining. I wish they made this in capsule form so I could give it a longer trial and have confidence I was getting a full dose into her.