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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Hilary Duff spent her teenage years in the spotlight, so you know she knows exactly how to treat her skin. Makeup artist Etienne Ortega shares how he preps Duff for a big day on the red carpet: "The day of, I usually start with a light exfoliation and then multi-mask," he says. Ortega recommends a "clay-based mask on the T-zone area to soak up any excess oils" and a hydrating mask like Perricone MD Hyalo Plasma Hyaluronic Acid Intensive Moisturizer , $135, on the rest of the face. Then he follows up with a rose water spray like Pearlessence Rose Water Face Mist, $20, for toner before applying a soothing serum and moisturizer.

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