In this episode Dr. Dan welcomes another young Russian researcher that is focused on aging. Specifically she is focused on skin aging. Her name is Polina Mamoshina and she works for a bioinformatics company by the name of Insilico Medicine, Inc. Her research fosus is on skin aging biomarkers and photoaging of the skin. We discuss why sunscreen might be a very bad idea, what can we do now to slow or correct skin aging, and what does the future hold for reversing skin aging.