I need to cut my hair.

我需要剪头发。

Rinse the shampoo out of your hair

把洗发水从头发上洗掉

I didn’t recognize you with short hair!

我没认出你是短发！

If you don't wear goggles and a swim cap, it can be bad for your eyes and hair.

如果你不戴护目镜和泳帽，这对你的眼睛和头发不好。