Hailey Bieber's 'hack' for glowing skin involves mixing serum with liquid foundation

Hailey Bieber's 'hack' for glowing skin involves mixing serum with liquid foundation

Hailey Bieber has already made "glazed donut skin" a thing, and now she's sharing exactly how she achieves her signature glow. In a recent TikTok video, the 25-year-old model explains the simple "hack" she uses to nail this dewy look.

"I really love this @rhode hack... I use this trick when I do foundation," Bieber wrote in the caption of her post. The clip begins with her pumping Rhode Peptide Glazing Fluid (a product from her own skincare brand) onto a few drops of liquid foundation. She blends them lightly with a makeup brush before a makeup artist appears to apply the combination to her skin.

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ICYMI, Bieber debuted her Rhode skincare line earlier this year — and the Peptide Glazing Fluid, a gel-serum marketed as "the dewy hydration layer," quickly became a bestseller (there's currently a waitlist to order it online). The product's key ingredients include niacinamide (a form of vitamin B3), peptides, hyaluronic acid and marula oil (which is rich in antioxidants and fatty acids) to brighten, plump, hydrate and support the skin barrier.

Using a daily facial serum, especially a product that contains powerful antioxidants like vitamin C, vitamin E, and vitamin B3, is key to healthy skin care, says Kavita Mariwalla, MD, a board-certified dermatologist and founder of Mariwalla Dermatology, previously told Shape. "When you apply an antioxidant topically, it can slow the aging process and make skin appear brighter and fresher," she said.

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Typically, serums are applied before makeup, which has the benefit of smoothing foundation application. But pairing serum with foundation can be a great way to achieve a radiant makeup look, says makeup artist Amrita Mehta. "The serum allows the formula to shine through slightly, allowing the skin to shine through a bit more, and the skincare in the mix will really help give the skin a glow."

Celebrity makeup artist Justin Cornelius, known in his Instagram community as @jh0llyw00d, agrees, saying, "If you're wondering how to elevate your routine, it all starts with 'cocktailing' your foundation for a truly customized and elevated experience that's simple and adds just 10 seconds to a routine."

However, when choosing a serum to mix with your foundation, make sure the bases of both products complement each other, advises Mehta. "Oil and water don't mix, so if you choose an oil-based serum, avoid a water-based foundation and choose an oil formula instead." So you combine oil with oil and water with water. This hack definitely works best with foundations that blend easily, adds Mehta. In other words, don't try to mix a skin care serum with powder foundation formulas.

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Another warning: Mixing products can cause coverage errors, warns Christina Gallardo, makeup artist and beauty expert at NBClx. "Foundations promise a lot in terms of wear and finish, but they can only do so if you keep the carefully formulated product intact. Mixing it with skincare of any kind can compromise the integrity of the foundation itself. It's not bad per se, but your foundation may not work as well as it should."

If you're not sure you can properly mix your own skincare and makeup cocktail, don't worry. Many cosmetic companies make makeup products with skin-care ingredients in them, Gallardo points out. “This way we can get the best of both,” she says. For people interested in two-in-one products that include foundation and skin care, Gallardo recommends the Kosas Revealer Skin-Improving Foundation and the Charlotte Tilbury Beautiful Skin Foundation.