Baby Smiles: When Does Your Baby Start Smiling & What to Expect

Most babies develop social smiles during the second month. Initially, your baby may smile when they are sleeping, but by 6 weeks they may smile when they are awake and alert, and by about 8 weeks they will smile at familiar faces. It is important to remember that all babies are different and developmental milestones are just an average. Some babies may smile earlier or later than others.