You have to pick the products that give the best residue for your particular breed of dog. You have to have the best groomed dog in the ring. If you have no residue on the hair, then you have no glamour. Residue is essential for the finished look. Another reality that needs to be addressed is the fact that buildup is the bad word.
Buildup occurs from the accumulation of residue.
Some breeds require clarifying more often while others may need to clarify only once a month. Some breeds may be gorgeous with proper structure and the zeal to win, however have an incorrect coat. Some of these coats are porous and absorb products like a sponge. This type of coat should be clarified more often and requires careful watching. Buildup will cause unusual mating, the coat will be much too soft and the shine will be gone.