There are many products out there to help us remove tear stains,
yellowing of the coat from urine, pink moustache, or feet. This product by #1 All Systems is something that I have used and found effective to help remove yellow urine stains and to clean the moustache. It has a moisturizer, I found it not to be harmful to the coat. Over use of products used to whiten can be harmful on any coat. So be careful and observe the hair, if it appears dry best to condition and wait a while before redoing.
I have written before about Eye Envy and Angels Eyes for tear stains, though they help reduce tear staining I prefer to get to the root of the problem. I want to recommend reading reviews for Angels Eye treatment, I have been told repeatedly that it can be very harmful for your dogs kidneys if you use for an extended period of time, so if you use this only use it for a short period of time.
What worked for me was changing my dogs water to distilled, since then I have had problems only when I introduced a new food or once when I thought I had found the perfect holistic supplement for coats and it had brewers yeast and immediately gave my dogs bad tear stains...stopped in three days the products, it took a few weeks to reverse this experience. I am very careful of the food they eat, but what is important is to understand what causes these problems. I was very thrilled to have been directed to a website and to share it with you. This website provides not only education about what causes these problems but also provides excellent holistic solutions to remedy the problem.
The stain removal tips below are from the website but be sure to check to the link for other information such as foods that can be helpful...like giving your dog green beans to eat every day...you gotta like that! Again check this website for more educational information.