The phrase "get one's hair" does not necessarily have an antonym. This is because it is a general term that can refer to various actions taken when dealing with one's hair, such as combing it, washing it, or cutting it. However, some possible antonyms for specific actions could be "tangling one's hair" for combing or styling, "dirtying one's hair" for washing, and "growing one's hair" for cutting. Ultimately, the antonym for "getting one's hair" would depend on the specific action being referred to and the context in which it is used.
