not harm/touch a hair of somebody's head

not touch a hair on (one's) head

To not hurt or injure someone in even the slightest degree. They had better not touch a hair on your head, or I'll go to the police!
See also: hair, head, not, on, touch
Farlex Dictionary of Idioms.

not harm/touch a hair of somebody’s ˈhead

not hurt somebody physically in any way at all: If he harms a hair of my daughter’s head, I’ll kill him.
See also: hair, harm, head, not, of, touch
Farlex Partner Idioms Dictionary
See also:
  • not touch a hair on (one's) head
  • not harm a hair of someone's head
  • not harm a hair on (one's) head
  • slickum
  • the carpet matches the drapes
  • the carpets match the drapes
  • the drapes match the carpet
  • man bun
  • tear one's hair, to
  • get in somebody's hair