In this episode, Kristen and Kyla sink their teeth into the ethics of dental hygiene — toothbrushes, toothpaste, floss, and mouthwash. Topics: Kristen wants to feel the burn; what’s in toothpaste, anyway; toothbrushes and the environment; and why it is so hard to get a waste-free, fluoridated toothpaste. 2/2 podcasters agree that Kyla’s homemade toothpaste should not have been sweating.