In the Shulchan Aruch, 531:2, the text reads אין מגלחין במועד and then continues to have a discussion about whether one can be מגלח, a word I learned to be "shave." It also later (in s"k 5) it reads ...
When did it become popular to have a ceremony for a boys Upsherin, his first haircut when he reaches the age of three?
In some families/communities, little boys do not get their hair cut until they are three, and then there is a gathering for cutting their hair. The haircut is called an "upsheirin" or "chalakeh." ...
Are you allowed to take a Haircut The day of Erev Pesach after Burning the Chometz? Does it make a difference if your are a Male or female are small children Different?