This entire episode was inspired by one of Brennen's friends asking about washing legs in the shower. Which unlocked a core memory for Samantha about someone  she knew using one product for shampoo & soap. This episode is full of hysterics,  stress, clean tips, a mini-rant about high school dress codes, and X-in-1 shampoo. Spoiler alert - please don't use an X-in-1 product.