AS a groomer, yes Angel eyes works wonderful if you remember to do it all the time. It is not a quick fix, and has to be done constantly. it is also not perfect. I have seen it work great on some dogs, and so so on others.
It is wise to seek a vet and rule out any medical condition, and as long as there is none, I would go for it. Good luck
I have been sprinkling Angels' Eyes on my little girl's food for about 8 months now and it works perfect for her. She is 9 pounds and I use 1/4 teaspoon. My daughter also uses it for her Maltese with great success.
I questioned the use of it before I started giving it due to the antibiotics. The makers and others who I talked with who were using it assured me that the amount of antibiotics involved was very minimal and not harmful. I would run it by your vet though to see what their opinion is if I were you.