is there any other natural expression?

"Jane looks beautiful when she rats brushes her hair."

How do native speaker say this?

You could also say "combs her hair" but comb and brush are two different things. I've never heard anyone talk about "ratting" their hair before! :)

is there any other natural expression?

"Jane looks beautiful when she rats her hair."

How do native speaker say this?

Brushes or combs hair is better.but also you could say "more beautiful" because it can be taken as offensive to some women.