Naomi Watts believes hair can be "our whole identity".
The British-Australian actress is famed for looking gorgeous on the red carpet and always sports perfectly-maintained tresses.
Naomi knows how important luxurious locks can be for self-confidence and believes we start caring about our appearance from a young age.
"We place a lot of importance on our hair, from the playground [onwards]," she shared with Australian radio show hosts Kyle and Jackie O.
"We're always like, 'Mine's longer!', 'Mine's shinier!' Our whole identity is about our hair sometimes; for men too."
Because of the importance she places on her tresses, the 44-year-old has helped launch the Pantene Beautiful Lengths campaign in collaboration with the Look Good... Feel Better charity.
The project encourages women to grow their locks and donate them to be made into wigs for cancer patients who have lost their hair due to chemotherapy treatment.
"It's a fantastic concept for women who are undergoing cancer treatment," she explained.
"And [losing] the hair is a horrible reminder of the sickness. To be told a real-hair wig is being made for you makes you feel better. When you look better you feel better."
Since 2006 the programme has been a huge success and has donated around 24,000 free wigs to cancer patients.
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