We have all heard of the phrase “beauty is skin deep”, suggesting skin has a rather superficial role in who we are. But what if that is not true? Claudia Aguirre tells us about the “hidden brain” in our skin and the surprising things it reveals about our mental health. Claudia Aguirre is a Neuroscientist, Skincare Expert, Spokesperson and Lecturer, UCLA Alumni, and TEDMED contributor. This talk was given at a TEDx event using the TED conference format but independently organized by a local community.