What is a hair mask?
What is a hair mask?
user
I know hair masks are something that people use to make their hair healthy and shiny. But I’m not an expert, and there’s a lot of different kinds of hair masks. I think a hair mask would be a kind of smooth skin cream that you use to fix your hair, like putting make-up on.
assistant
Are they beneficial?
user
Some hair masks are really effective, some of them don’t do anything at all, and some of them are really dangerous.  There are a lot of hair masks that have damaging ingredients, so I wouldn’t recommend people to use them.
assistant
I did not know they were dangerous. Are you sure?
user