I use Rosie B Good softer than a pillow shampoo and Rosie B good Smoother than velvet conditioner. It is awesome!!! It made my dogs coat so soft it smells amazing and his coat is so nice and bright!!! I wont buy any other shampoos I have tried so many
Isle of Dogs - Rosie B. Good
There are the brands.
I buy it at Petco. Its expensive but well worth it!!
You shouldn't bathe often it takes away the dogs natural oils and it can make them itchy and actually do the opposite of what you want. You can buy wipes for their coat of the mud and such. I bathe every few months. Brushing is also good to help stimulate the natural oils and help make the coat shiny.