Many thanks to Bern Kohler, Taiha Joo, Jennifer Ogilvie, Jinquan Chen, and Mahesh Hariharan for organizing the Frontiers in Ultrafast Spectroscopy of Photoexcited States symposium at Pacifichem this year, and for the invitation to participate. It was great to have a chance to share James’ work using SSTA to understand the surfaces of perovskite NCs during their synthesis.