to a hair
To a high degree of precision; with the utmost exactness; to a nicety.
Synonym: to the turn of a hair
House Speaker Nancy Pelosi (D-San Francisco) speaks about her visit to a hair salon during a news conference at the Mission Education Center Elementary School in San Francisco on Sept. 2, 2020. Source: Internet
It was enough to refocus the panel, with Jenny following the clues to a hair band guy who went country, landing on the internet's favorite pick, Bret Michaels. Source: Internet