I have a minature pincher 1 1/2 years old in which I moved from Chicago to North Carolina. My min pin is having excessive shedding I was feding him kibbles N bittes beef. I now have swtiched him to Natural Choice Lamb meal and Rice and I was bathing him with ChlorhexiDerm shampoo since he was around 6 to 8 months beacause the vet found some lesions on his stomach area in which he was loosing hair on. Ever since then I have been using the same shampoo but know with his severe shedding and his coat has flakes like dandruff I now need help should I change his shampoo or give him supplements like The Missing Link for Canine?