Lesson 1: For babies from 6-8 months with 2-3 milk teeth, it is the 1st toothbrush and introduces the concept of holding a toothbrush. The thick and contoured handle makes it easy for baby to grasp. The soft elastomer rubber head is soothing to baby’s tender gums Lesson 2: For babies from 8-12 months with 8-10 milk teeth, toothbrush is used as a transition to familiarize babies with the brushing movement when brushing teeth. The soft elastomer rounded heads are soft and tender to baby’s gums, while the fine bristles ends allow cleaning for all teeth as well as in between the teeth. Lesson 3: For babies over 12 months or when most of milk teeth are in, your child is ready to try his first real toothbrush with toothpaste.