Margot Robbie's spray tanner has a special $5 trick to get rid of orange hands

• Liz Pino is the woman behind Margot Robbie's "Barbie" red-carpet spray tan. 
• Pino shared some of her tanning tips and tricks with Insider, including how to avoid orange hands. 
• She says you can use Mr. Clean Magic Eraser to get rid of any streaks or splotches on your palms. 

Nothing ruins a great spray tan like orange hands. But there's a special trick to banish those splotchy palms — and it'll only cost you $5. 

Insider recently spoke with Liz Pino, the spray tanner behind Margot Robbie's perfect "Barbie" glow, and she was happy to reveal some of her tricks of the trade. 

Pino, who works at Queen Bee Salon & Spa in Culver City, California, said you should always wash your hands about 30 minutes after your spray tan. Simply running water over them can help pick up any leftover color, so there's no need to wash them super vigorously. 

Another essential rule? Don't sleep in the nude. 

"Don't sleep naked. Please, for the love of God, don't sleep naked!" Pino said. "That's a huge no-no because your hands are going to touch your body one way or the other, and the first thing that spray tan loves to transfer onto is your hands." 

"Nothing looks worse than a pair of messed up hands, in my opinion," she added. 

If you do still end up getting some tan on your hands, Pino's special trick is to use the Mr. Clean Magic Eraser. 

While Pino warns against using the eraser on your entire body, she said it's good for removing stains on your hands. If you can't find the $5 eraser at your local pharmacy or grocery store, Pino also recommends pouring some mineral oil on a warm washcloth. 

Pino has been spray-tanning celebrities like Fergie, Ellie Goulding, and Rosie Huntington-Whiteley for years. She's also done Robbie's spray tan for a couple of films, and helped consult the UK makeup artists who worked with Robbie while "Barbie" was filming in London.

Pino also got Robbie red-carpet ready for the "Barbie" premiere, and she said she loves working with the Australian star. 

"If you are a person that thinks Margot Robbie looks like the nicest person, then you're 100% correct," Pino said. "Maybe that's why she's so pretty. What's in the inside comes on the outside — because she is that nice."