many people like the idea that this is not a permanent treatment because it makes them feel comfortable when they try them for the first time. *she has a pet dog named elvis. back in the car, cold, very wet and more controlled but no calmer, she looked at her phone. once it's completely dry and hard, i wrap it in plastic to protect it from the water. and obviously, thanks on your sweat! don't see a shift that works for your schedule? do your homework, plan ahead, and enjoy a stress-free trip! one type is enough for now. 