If you've ever found yourself wishing you could decode what makes Beyoncé, Beyoncé, then you're not alone.

Now, we can finally dip our toes into the singer's beauty world, as two of her make-up artists reveal their secrets in two rare interviews.

Talking to beauty website Into The Gloss, Beyoncé's make-up artist for over ten years, Francesca Tolot, shared stories about creating the singer's most iconic music video looks from her flawless skin in If I were a Boy to her radiant glow in Single Ladies.

Meanwhile, Sir John, the legendary make-up artist behind The Mrs. Carter Show World Tour, wrote about boosting sleep deprived skin and creating the star's metallic smokey eyes, as a guest editor on supermodel Iman's lifestyle website Destination Iman.

We round-up the best tips, tricks and stories from both interviews below:

On Beyoncé's glowing skin

When skin is sleep deprived, Sir John's go to product is Caudalie's Beauty Elixir. It "help(s) me address signs of fatigue rather quickly, without relying on makeup," he said. "When I do opt for a tinted moisturiser or foundation I mix in a few drops of Charlotte Tilbury’s Wonder Glow Illuminator, resulting in a luminescent property in the overall look and feel of the complexion."

In the 1+1 video (pictured above) Francesca Tolot said there was an extreme use of baby oil. The was "no make-up on the skin because it would be gone in two seconds," said the make-up artist - "But the ultimate use of baby oil, yes. After you shoot, you just wipe it off with a towel and your skin is so nice and smooth and soft... And sometimes I mix in some shimmer to the oil or moisturiser."

"But the Single Ladies video—I’ll never forget that day," she continued. "It was the hottest day in New York and the studio's air conditioning broke down. So as you can imagine, dancing in the heat like that, the glow was all natural. [Laughs] It was tough for the girls, but they did it."

On Beyoncé's 'no make-up' look in "If I Were A Boy"

"There was really practically no make-up there," said Tolot. "For that, I use moisturiser and maybe a little bit of concealer and lip balm. I like Amazing Concealer. It’s very intense, very rich. It really covers a big problem if you need it to, and I like that. Otherwise, I really love La Mer The Radiant Concealer. It’s nice—enough coverage, but it’s very moisturizing and it doesn’t dry or crease."

On Beyoncé's mascara

Tolot continued, "One that I find myself using on her a lot is MAC In Extreme Dimension Mascara. To me, it's the best mascara right now, so that’s kind of a constant."

On Beyoncé's false lashes

"Whenever I use eyelashes—not only on Beyoncé—I get them at the drugstore," said Tolot. "I think they’re Ardell. But I don’t use lashes a lot on Beyoncé anymore. Except for that look in the Blow video, when we went for a really ‘70s look. But we stopped using lashes quite a few years ago. At one point I brought up the fact that I feel that false eyelashes are dated, unless you're going for the retro look. So I talked to her about that, and she totally agreed."

On creating Beyoncés metallic eyelids

While on tour with Beyoncé, Sir John is free to experiment. “For shows, she lets me wing it, and we just go with it,” he said, and one of those most notable make-up looks are her metallic eyelids.

"You can introduce metallic eyes in a myriad of ways," he said. "Whether it be embracing a shimmering jewel toned smokey silhouette Or for more minimal attention try just adding a copper, silver, or bronze to the inner corners of your eyes (tear ducts). By using either technique your playing with the idea of reflecting light from your face, which is always quite charming to gaze upon."

He suggests keeping the lips mute with this look, but by choosing colours that add volume to the pout without distracting from the eyes, such as warm taupes and pinkish nudes.

On Beyoncés eyebrows

For the stars' last album, 4, Tolot explained how they transformed her eyebrows by bleaching them. "I loved doing that to her. The look was very ‘70s-inspired. So I was referencing a very famous singer in Italy back in the ‘70s named Mina—she used to do that, or even shave the eyebrows. Beyoncé's eyebrows were bleached on the W cover, too, because that happened at the same time. She had so much going on, shooting the video and the images and such. She tried to keep them bleached for as long as she could.

"I’m telling you, she is very professional and she feels confident. She's good with herself, so she’s not afraid of what somebody else would think. If it’s needed for the project, then she’ll do it. But it’s hard to go around with no eyebrows in real life. It was good for the time, we got some good images, then I guess we moved on. [Laughs] And in 'Video Phone,' we used the whole wax and glue technique to cover the outside part of the eyebrows, and drew them in a different way. It was so clearly Bettie Page—I love that look; it’s one of my favorites."