Good shampoo for Border Collie (Show dog)?

Oh my goodness!! I used to work at a garden center where a customer brought in his Border Collie. This dog had, hands down, the MOST beautiful coat I have ever seen on a dog. He told me he gave it InFlight formula - a mix of brewer's yeast and other supplements good for dog coats. I tried it on my (non-showing) Corgis and wow! You can really see a difference. You only use it for part of a year, then let them shed out their coats (watch out! haha). I think the company sells shampoo also. I never used that because I take my pets to groomers for baths. You might look into their products.They are totally for REAL. http://inflightcoatformula.com/