When Do Babies Start Smiling? is a reassuring, practical guide to one of a baby's earliest social milestones. Claire Whitfield Ross explains the difference between reflex and social smiles, the typical six-to-eight-week window, corrected age for premature babies, and the many ways infants show connection. With gentle timelines, observation tips, frequently asked questions, and guidance on when to share a concern with a qualified professional, this calm companion helps parents understand development without turning a baby's smile into a test. Readers will learn how sleep, hunger, temperament, family culture, and social-media comparisons can shape expectations—and how to enjoy the first social smile when it arrives, unhurried and unforced.