This Next-Level Serum Works With Your Circadian Rhythm To Repair Your Skin While You Sleep

Given that your skin’s ability to repair itself peaks during the night, there’s some real truth to the concept of beauty sleep. Getting enough sleep is the first step to ensuring that your skin can more effectively reboot, but those topical products you apply before bed also play a role in the process. During the day, you’ll want to stick with active ingredients that help your skin while it’s in a protective state, which is why sunscreen and antioxidants come dermatologist-recommended as part of your morning skin care routine. But in keeping with your skin’s circadian rhythm, it’s the evening hours that are most impactful when it comes to repairing damage and supporting functions like collagen production and cellular turnover.

Like a silk pillowcase or Frette sheets, Nocturnal Skincare offers a luxurious approach to your evening self-care routine that serves a practical purpose, too. Instead of slathering on multiple skin care products, Nocturnal developed a serum that synchronizes with your skin’s renewal cycle so you can apply it after cleansing, top it off with your favorite moisturizer, and start snoozing sooner.

Ahead, take a closer look at the ingredients (and the patent-pending delivery system) that make the Polar Night Renewal Serum a superstar at reducing wrinkles and increasing skin firmness and moisture. And, from now through December 31, 2025, you can receive a 20% discount with the code ‘FALLSKIN20’, making the cost of the full-size serum less than $150.

Nocturnal Skincare Polar Night Renewal Serum

Nocturnal Skincare’s Polar Night Renewal Serum relies on three pillars to maximize your beauty sleep. First are the ingredients that power the serum, which include a combination of signal and carrier peptides to stimulate collagen and elastin production, niacinamide to brighten the complexion, and Nordic oat and evening primrose extracts to soothe and support the skin barrier. Secondly, the serum delivers those ingredients throughout the night using Nocturnal Skincare’s patent-pending Okosu™ transepidermal delivery system, which features time-release technology and ingredient stabilizing mechanisms like colloidal gold encapsulation. And finally, the serum’s ingredients and delivery system were developed to work in tandem with your skin’s circadian rhythm, bringing you a more targeted approach to skin care that delivers more impactful results. In a six-week clinical study with a third-party testing facility, the Polar Night Renewal Serum was shown to measurably reduce wrinkles by 15%, increase skin firmness by 43%, and increase skin moisture content by 20% in 100% of the participants.

In addition to efficacy, the brand prioritizes craftsmanship and sustainability. While the serum is made in the US, its glass bottle was crafted in Italy for an elevated design that allows the product to be refillable, too. It’s also worth noting that the Polar Night Renewal Serum is cruelty-free and vegan, as well as being free from fragrances that can potentially cause irritation.