Actress Sophie Turner can switch up her hair colours so often by using a product, which stops her hair falling out.

"I use this product called Wellaplex — it's really useful when dying my hair for role or just in life. You need something like that otherwise your hair will fall out," Turner told elleuk.com.

The product enables Turner to effortlessly switch hair colours time after time again.

Explaining the importance of having an interchangeable look, she said: "I had to dye my hair red for 'Game Of Thrones' because Sansa's character in the book has auburn hair and it's pretty integral to who she is as a person. It was kind of daunting, but kind of exciting as well. It was a big shock, especially for a thirteen year old, but it was cool."

Since then, she has played Jean Gray in "X-Men", modelled for label Louis Vuitton's AW17 campaign and landed her first beauty deal as Global Ambassador for Wella Professionals.

Turner likes nothing more than going back to her natural hair as it makes her feel like a child again.

"When I go back to my natural hair it's exciting to separate myself from the characters that I've played. If my hair is blonde it means Game of Thrones is over, and X-Men is over, and I feel 12 years old all over again," she said.