Dr Kerri Purdy speaks with Dr Vincent Richer, a dermatologist and expert in lasers and phototherapy in Vancouver, BC. They briefly discuss just how cool lasers are and then get down to practical considerations such as how to determine which laser treatment to use for a specific condition. For example, what setting to use for vascular lesions vs melanocytic lesions and other finer considerations for finessing laser selection. Dr Richer and Dr Purdy also discuss the resources residents can use and approaches they can take to gain a better understanding of how to make effective clinical decisions on the use of lasers and phototherapy.