This may sound silly, but since my two are SO active I only bathe them when absolutely necessary (ie, a romp in the ocean, a pond, mud puddle, or when super duper sandy).
The rest of the time, I do one of two things:
1- grab a towel, douse it with water, and rub all over their body
2- spray them down with water, then buff dry with a towel
This reactivates the smell from whatever shampoo I used last AND gets whatever grim might have stuck to their coat