United Kingdom, July 4 -- Emma Roberts doesn't wash her hair when she's on holiday.

The 34-year-old star has revealed that she prefers to dip her hair into the ocean water rather washing it with shampoo and conditioner.

Emma told Popsugar: "I try not to wash my hair on vacation.

"I put my hair into braids and jump in the ocean. That's what I do instead of shampoo and conditioner."

The actress doesn't like the idea of mixing hotel products with her dyed hair.

She explained: "I've washed my hair when I've just dyed it and it's turned a crazy colour.

"When I have blonde hair it's turned yellow, and when I've had red hair it washes it all out. So I get so scared to really give my hair a real wash."

Emma has actually gone as long as fiv...