At 53, Sarah Jessica Parker seems to be aging backward. Her flawless complexion is the stuff of true #skincaregoals. Surely, attaining a gorgeous glow like hers involves tons of costly A-list beauty treatments, right? Turns out the secret to her radiance comes in a $30 bottle of La Roche-Posay’s Toleriane Fluide Soothing Protective Moisturizer. (Okay, and most likely some pricey A-list beauty treatments, too.)

The actress and fashion icon recently revealed her longtime love for the affordable skin-care product in a recent interview with TODAY, calling it her absolute favorite product. “It’s amazing,” she gushes. “It’s the only moisturizer I’ve used forever.”

And for good reason. Boasting an all-star duo of super hydrators, SJP’s go-to cream keeps skin healthy, supple, and smooth. The first ultra-moisturizing element in this dream team is glycerin. A powerful humectant, glycerin attracts water like a sponge, drawing in moisture from the air and preventing it from escaping your skin. That’s why it’s an essential ingredient in so many skin-care products. (It’s also found in most of these derm-recommended moisturizer picks). Basically, glycerin is your dry skin’s bestie, especially during harsh winter weather (read: when it’s 20 degrees outside and your overzealous radiator pumps out enough dry, crackling heat to warm a stadium). 

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The second hydrator—and overall MVP ingredient of SJP’s moisturizer—is niacinamide, a form of vitamin B3. Not only does it help skin retain moisture, but it also reduces redness, minimizes inflammation, diminishes fine lines and wrinkles, treats acne, lessens the appearance of pores, and protects against environmental stressors. Oh yeah, did we mention it regulates oil, too? That’s what makes La Roche-Posay’s light formula a great moisturizing option for acne-prone skin, especially on days when your oil glands are on overdrive (think: post-workout). Plus, it’s free of fragrances and preservatives, perfect for even the most sensitive complexions.

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Still not convinced? Well, if you won’t take SJP’s word for it, just ask the 200 Dermstore shoppers who gave the moisturizer 5-star reviews. “This baby moisturizes like no other,” says one purchaser. “I’ve tried dozens of lotions and only this one has gotten rid of my stubborn flakey, dry patches and given me a wonderful glow.” Another raves, “this lotion has been a game changer for me. I have gone through a million moisturizers, from cheap to ridiculously expensive. When I first tried it out, I knew I had found my HG.”

Well, there you have it. La Roche-Posay’s Toleriane Fluide Soothing Protective Moisturizer ($30, dermstore.com) is the holy grail of skin creams—a moisturizer fit for the likes of SJP and affordable enough for us common folk, too.