Paris Hilton Just Launched Skin Care. Here’s Our Honest Review.

“When the lab samples arrived on my desk, the dropper bottle filled with what looked like a pink love potion was the first thing I wanted to try. Turns out it was a bit of a spell because I fell hard for the results after using these drops at night,” Cruel says. “Whether combined with the Parívie night cream or under my other favorites, it left my skin smoother and brighter in the AM. This elixir traveled with me across states and country lines for months, and it became my go-to for reviving a dull facade caused by too much dry plane air.”

Bailly has also added it to her regular nightly rotation. After using it at night, “I reliably wake up with skin that’s indeed smooth… very smooth,” she says. “I usually have to put up with a little sting or temporary redness to get my skin to feel this silky, but so far this water-light formula has triggered neither.”

That’s Tight Plumping Vitality Serum, $125

When I asked Hilton what her favorite Parívie product is, she said it was like “choosing one of my children”—and then she immediately chose this serum. “I love that it’s a multi-tasker… It really firms and tightens your skin. I’ve never seen a product like this,” she says.

Having used this serum on and off for a couple of months now, I can’t confidently say it’s unlike anything else on the market, but it does include that proprietary inPHinite Youth tech that, legally speaking, does set it apart from the crowd a bit. Like I said earlier, we aren’t privy to the exact ingredient blend and its potency level, but this serum’s general formulation does include a bevy of botanical ingredients intended to protect against environmental stressors, prevent fine lines, and strengthen the skin barrier, such as camellia sinensis leaf extract, ipomoea batatas root extract, and oryza sativa hull extract, which Dobos says have “antioxidant benefits that protect skin against blue light and UV.” Romanowski highlights the formula’s—warning: long, science-y words ahead—sodium dilauramidoglutamide lysine, which he describes as “a niche barrier-support ingredient. It’s nice but subtle.”

Dobos also pointed out the serum’s cocktail of peptides. (Peptides, FYI, are short chains of amino acids that signal cells to perform specific functions like collagen and elastin production.) Specifically, those peptides include acetyl dipeptide-1 cetyl ester and tridecapeptide-1, which she says are ”both purported to reduce muscle contraction to improve wrinkles.” It also includes pentapeptide-22, which is ”designed to reduce hyperpigmentation from UV exposure,” and oligopeptide-1, which ”supports skin cell growth and slows thinning of skin that comes with age.” All said, it’s not totally clear exactly how strong this proverbial cocktail is; Romanowski says some of these peptides lack strong, independent clinical research and therefore might sound more impressive than they are.