A: Children between 6 and 12 can certainly bathe daily, but some may not need to depending on their level of activity on a particular day. But around age 8 or 9, most kids start needing to scrub up daily, since it's usually around this time that they begin sweating and experiencing odor from areas like their armpits, feet, and private parts. Girls are especially vulnerable because they typically start puberty a year ahead of boys. Tweens and teens may even need to shower twice a day after playing sports or vigorous exercise. You should also have your child start washing his face twice a day, especially if he's starting to experience acne or other skin issues.