我用止血笔处理刮胡子割破的伤口。

I use a styptic pencil on shaving cuts.

《牛津词典》

止血笔(用止血剂制成的药棒，如用于刮脸时划破之处)。

A styptic pencil, IE a stick of this, used eg on a cut made while shaving.

youdao

那些被戴着钻戒的女士们反手扇过耳光的先生们应该知道止血笔是管用的。

And any gentleman who’s ever beenbackhanded by a lady with her diamond ring should know a styptic pencil willstop the bleeding.

youdao