Amber Le Bon leaves her hair for ''four days'' before washing it.

The 28-year-old model - who has recently chopped off her long locks and has donated seven inches of her locks to the Little Princess Trust to use for wigs - has admitted she tries to avoid washing her tresses for as long as she can, and she relies on dry shampoo to ''solve'' any ''problems'' that come from leaving her hair.

Speaking to Hello! magazine, the brunette beauty - who is the daughter of Duran Duran singer Simon Le Bon and Yasmin Le Bon - said: ''I really love what Little Princess Trust does, it's a charity that makes real hair wigs for children who have lost their hair. The confidence it gives to the kids is priceless.

''I leave my hair for as long as I can before washing it - usually every four days.''

And when asked about her essential beauty products, the fashion icon said: ''My top three beauty tips are: one, dry shampoo solves most problems; two, sometimes make-up looks better after you've slept in it; and three, always use lip balm for super soft lips.''

And the star also relies on ''strengthening'' haircare products, as well as ''anti-snap'' serums and other ''good quality tools'' to ensure her hair is in good condition.

She added: ''I use a strengthening shampoo and conditioner to maintain the strength and I think it is very important to use anti-snap serums if your hair has been bleached.

''Also, always use good quality tools like GHD. I use the GHD Air Pink Blush Hairdryer, which is great. And i generally take care with my hair.

''I'm always gentle with it, I don't use high temperatures when using hear styling and I never brush vigorously.''