A lot of people have admitted they took fewer baths and showers than usual while in lockdown. But recently, Ashton Kutcher and Mila Kunis admitted they only wash their kids when they look dirty, which has sparked quite the debate. So how often should parents bathe their children? Generations of kids have grown up expecting bath time every night. Dermatologist Dr. Michelle Henry says that the American Academy of Dermatology recommends bathing children under 6 years old two to three times a week.