I groom my WCS at home. We've used a simple puppy shampoo since we got her and she has a beautiful shiny coat and always has done- she'll be 18 months tomorrow! The only thing is that since she was spayed in January I've noticed that she has a bit of dandruff. She's all black so it looks quite noticeable after she's worn her harness or had a brush. What dog shampoo do you use? Any good anti-dandruff or gentle to the skin ones that you'd suggest?