Sometimes Penny Dreadful star Eva Green wishes she could switch places with her twin sister and enjoy the luxury of anonymity. "She has an amazing life in Italy. She's married to a count," Green says. "I wish I could be her sometimes. She's more down to earth." When the French actress wants to disappear–a difficult feat after her mega-sexy turn in Sin City: A Dame to Kill For–she puts on her "teenager" uniform: "black t-shirt, black leggings, no makeup."

But her signature jet-black hair, red lips, and, let's be honest, cleavage make it impossible to blend in. We want to know all of her beauty secrets. Here, Green shares her thoughts on hair, nutrition, and nude scene prep.

ON THE PERFECT RED LIP:
I would do a red lip [on the red carpet], a flashy red lip, bada-boom. Otherwise, I'm useless. I love M.A.C or NARS pigments. Ruby Woo or Lady Danger.

ON SKINCARE:
I'm a vampire; I use a lot of sun cream. Skinceuticals Ultimate UV Defense is very good. The less you go in the sun the better. I moisturize with Avene. It's a French brand that's really good.

ON HER HAIR REGIMEN:
I wash my hair quickly. L'Oréal Absolut Repair has amazing conditioner and shampoo; it makes your hair thicker and shiny. I'm not just saying that because I'm a L'Oréal Professionnel ambassador! I dyed my hair for the first time when I was 15 and it stayed. I like dark because it makes my skin pop and it's more me. I work with Orla Carroll for hair on shoots.

ON NUTRITION:
I'm becoming very LA. I drink lots of water and eat lots of green vegetables. I'm doing lots of juices at the moment. I kind of do apple, kale, carrot. I've got a fancy juicer. I started feeling very tired and everybody was like 'You should try the juicing,' but I really love it. I felt very weak. It was a revelation. And only organic fruit and vegetables. There's so many pesticides and shit. I discovered the book by Dr. Fuhrman where he talks about juicing and eating mainly vegetables.

ON NUDE SCENE PREP:
As an actor, it's not like a porn star. The role is not gratuitous and I kind of detach myself if I have to do a nude scene. For the sequel of 300, I did a lot of core training and that kind of work because my character was a warrior—[it needed] to be believable [that I could] kick some ass. Two or three months of training for five hours a day and I loved it. Your muscles are getting stronger. It's like a drug almost, you feel addicted, but then on your own it's so hard. You don't have somebody kicking your ass every morning. I go for a run every day, I do elliptical, I do stretching. I run like 30 minutes—it's for the head.

ON SOCIAL ANXIETY:
I'm like a cave woman. I wish I could hang out in a big social place and being very open, but I'm not like that. Being shy was a real problem in school. I don't feel very comfortable. I have force myself to go out. At events, it's part of the job. I see it as a game. Otherwise I'm very invisible. I prefer to float around.

Photo above from Getty Images

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From: ELLE US