It's like having a hair appointment and waking up that morning only to find out that your hair came out fabulous! I'm sure Max will start breaking out tomorrow since it would have been the day after the appointment. I do imagine its a season allergy or something in the grass (pesticides?).
I bought this from amazon this morning at the advice of a friend as she has had excellent results:
Amazon.com: Virbac Allerderm Spot On for Small...