Even when she doesn't have a pregnancy glow, Beyoncé always seems to walk the red carpet with a special radiance. While at least half of her glow must come just from being Bey, according to Sir John, her L'Oreal Paris celebrity makeup artist, there is a process behind amping up his client's skin on red carpet day.

"When you're hitting the red carpet, water-based or mattifying moisturizers are great. I love the L'Oreal Paris Hydra Genius Moisturizer for Oily Skin, $17.99. It's great to prep and prime skin before you add on foundation," he says.

Before show time, Sir John suggests looking for skin care with glycolic acid or treating yourself to a glycolic peel, which helps exfoliate skin and resurface fresh cells. For consistent glowing skin, "a nice at-home daily product is the L'Oreal Paris Revitalift Bright Reveal Peel Pads, $19.99. The pads have a 10 percent glycolic complex that helps to give you fresh-looking skin," he says. But steer clear of salt scrubs and french fries before anything involving cameras: "The one thing to avoid is any type of salt or sodium treatments, as they will bloat the face," says Sir John.

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Makeup artists know that a knockout beauty look starts with a base of flawless skin. "For Charli's Grammy look, we wanted to keep the skin fresh and vibrant," says her makeup artist Colby Smith. Smith turned to products that you may already have in your arsenal for her client's face-forward look: Everything used was from Kiehl's.

"Skin was the focus, so I started by hydrating and plumping her skin," says Smith. He started with a five-minute Kiehl's Calendula & Aloe Soothing Hydration Masque, $45, to moisturize the skin, then moved on to Kiehl's Daily Reviving Concentrate, $46, to energize. To prep Charli's eyes for makeup, Smith used Kiehl's Creamy Eye Treatment with Avocado, $29, before curling her lashes. He finished up with Kiehl's Lip Balm #1, $7, "so her lips could drink up the moisture" during makeup application.

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The Korean skin-care product trend has been providing next-level beauty goals for a while now,, so it was only a matter of time until it left its mark on Hollywood. Emma Stone's makeup artist Rachel Goodwin shared a selfie of her favorite client sporting a lip mask just in time for the Golden Globes red carpet. The KNC Beauty All Natural Collagen Infused Lip Mask 5-pack, $24.99, provides a boost of moisturizing vitamin E, collagen and rose oil -- because no one wants to show up for a big night with chapped lips.

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If showing up for a work meeting with a zit is rough, can you imagine showing up for an awards show with one? It might seem like a blemish has never once walked a red carpet, but "Pretty Little Liars" star Ashley Benson shares that she uses regular acne treatments to make sure her skin is camera-ready.

"I have sensitive, acne-prone skin, so gentle cleansing and using Differin Gel Acne Treatment, $12.99, has been key," says Benson. "I start with a natural cleanser, followed by applying Differin Gel on my entire face, then moisturize. My skin is extra dry in the winter so I'll sometimes use coconut oil, too."

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For "Jane the Virgin" star Gina Rodriguez, red carpet beauty starts the night before with a hydrating mask. She recommends Clinique Moisture Surge Overnight Mask, $34.50; "It's like a big drink of water for my face -- and I wake up to an incredible glow," she told People Style. She then starts the day with Clinique's 3-Step System, $47, which includes a cleanser, exfoliator and moisturizer, all customizable to your skin type.

Even more relatable? Rodriguez just started using eye cream. "My mom recently told me, 'Don't wait until you're older to start [using] eye treatments.' I'd never really thought about it, in all honesty, so I was like, 'Okay, Mom. For sure.' But she's right," she said. Now, she looks well-rested for the cameras with a little help from Clinique Pep-Start Eye Cream, $26.50.

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