头发用英语可以说作 hair。例如：

1. I need to get a haircut to trim my hair.

2. My hair is naturally curly.

3. I'm going to dye my hair red.

4. I found a few grey hairs on my head.

5. There were hairs on the floor.

6. Her hair has turned grey.

7. She had dyed black hair.

8. I felt her dark brown hair brushing my shoulder.

9. The hat concealed her hair.

10. She has long, curly hair.

11. He needs to get a haircut.

12. I dye my hair blonde every summer.

13. Her hair ripples in the spring breeze.

14. Her hair was pleated in a queue.

15. bleach your hair

16. brush/comb your hair

17. colour your hair

18. cut your hair

19. do your hair

20. dry your hair

21. fix your hair

希望这些例句能帮助你更好地理解和运用“hair”这个词。