What is the meaning of Upsherin, the traditional celebration of a Jewish boy's first haircut at the age of three? This in-depth answer to that question explores as well the questions: Why is a boy's hair allowed to grow freely for his first three years? What is the kabbalistic import of hair in all its lengths and varieties? What is the mystical meaning of hair coverings? Rabbi DovBer Pinson answers these questions with his trademark deep learning and spiritual sensitivity. Includes a guide to conducting an Upsherin ceremony.