Actress Zoe Saldana's mum used to dye the Avatar star's hair with rum.

Saldana admits her mother was "a convenient Bohemian" and liked to use natural products and alternatives to chemicals - and that included boozy hairstyling methods.

But the odd technique worked and helps set the movie beauty apart from her friends growing up in the Dominican Republic.

She explains, "I would soak my ends with rum and then I would go and play volleyball in the sun... and I remember one time my neighbour... came by, I guess to check up on us... and she called up my mom and said, 'Listen to me, I went to check up on the girls and Zoe smelled like alcohol'.

"It worked. It (rum) would bleach it. It would go really auburny (sic) and sometimes really light."