The 22-year-old actress said she is always applying cosmetics to her friends and family, reported Contactmusic.
"I love doing make-up. I did my mum's make-up for all her job interviews and whenever I go out, I do their make-up too. My specialty? I like quite a natural look, but I do everything really.
"People underestimate the power of an eyebrow.
I recently got my friend into penciling hers in, which she thought was such a strange concept at first," Watson said.
However, the actress said she doesn't take advice from people when it comes to make-up and diet issues.
"Don't listen to everyone. It's kind of overwhelming, especially with your diet and skincare. You get so many different pieces of advice, you don't know what to listen to. I think people need to judge what works for them and trust their intuition."