Sienna Miller Shares Her DIY Remedy To Fix Her Hair After An Embarrassing Coloring Job

Sienna Miller can pull off almost any look. Yes, her day job is being an actress. But ever since she burst into the spotlight by co-starring in "Alfie" with her ex-nanny-snogging fiancé, we haven't been able to stop gawking at her fabulous personal style. "My style really just depends on my mood," she told The Sunday Times. "Some days I can feel clean and minimal. And other days scruffy, and sometimes vintage" (via YouTube). Whatever mood the cover girl's style is dependent on, it's clear she can pull it off.

As famous and stylish as Miller may be, she's still human. And for most of us, being human means having to deal with one or, ahem, several, hair-dying disasters – Miller herself admits to having a few. But she's also shared the DIY trick that saved her celebrity tresses. "I've also had pink hair — when trying to dye it red — and green hair, when trying to dye it brown," she told Vogue. "That was awful actually, I used henna, thinking I was being all organic and clever, and it was totally impenetrable." So what did she choose to use instead of henna? Here's a hint: It tastes excellent on a hot dog.

"I just couldn't get it back to normal," Sienna Miller said, adding that "the only thing that made any difference was ketchup, so for about a year-and-a-half I had to put tomato ketchup on my hair under heat until it went back to normal. And this wasn't even a childhood mistake — I was about 22 so it was all very silly and very public" (via Vogue).

How can a deliciously sweet yet acidic condiment we want to dip our fries in be the cure-all for an A-lister's hair? "The tomatoes and vinegar that are found in ketchup contain acids that neutralize the chemical reaction that causes the Martian effect," says Carlina Ortega, a colorist at the Rita Hazan Salon in NYC (per Fashionista). "It's actually a DIY trick that works well if the problem is minor to moderate." The Martian effect Ortega is referring to is when your hair turns green because the color is caused by oxidized copper that binds to the hair shaft.

It's hard to imagine the "Burnt" stunner sporting a thick layer of Heinz in her hair, even if she was dealing with a hair dye disaster. But considering the model can pull off almost any look, she probably made ketchup-soaked hair look good.