P5
The everyday peptide serum for smoother, firmer-looking skin.
- 1%Copper Tripeptide-1 (GHK-Cu)
- 1%Acetyl Octapeptide-3
- Size
- 1.0 fl oz · 30 mL
- Price
- $149.00
Peptide serums and masks picked by our physicians, for the look of firmer, smoother, calmer skin. Scroll down through the layers to see where they go to work.
This outer layer is the barrier. It decides what gets in, so how a formula is built matters as much as what's in it.
Collagen and elastin fibers give skin its bounce. Both thin out with age, and that's when fine lines start to settle in.
Peptides are short chains of amino acids. Every ingredient we feature has published research behind it, and we show you that research.
Two peptide serums for every day and two hydrogel masks for the days your skin wants more. Each one is built around ingredients with published research behind them.
The everyday peptide serum for smoother, firmer-looking skin.
Triple-strength peptides for the look of deeper lines.
The weekly brightening mask for a radiant, refined look.
The deeply hydrating mask for skin that looks tired or dry.
01 Every dayP5 Advanced Peptide SerumStart here. A few drops morning and night, under moisturizer and sunscreen.
02 Ready for moreP5 Reserve Intensive Peptide SerumStep up to the concentrate once your skin wears P5 well.
03 Once a weekInfuse Bioactive Hydrogel MaskYour mask night, for a brighter, more refined look.
04 When skin needs itRecover Peptide Recovery MaskDeep hydration after a long week, a flight or a day outdoors.
Dr. Gregg Winnestaffer and Lucas Winnestaffer chose every product in this collection the way they practice medicine. They start with the evidence, set honest expectations and stand behind what they recommend.
Every product we carry is a finished cosmetic, made for your skin's surface, and each one is something we use and trust ourselves.
Want the science behind an ingredient? Our Peptide Library covers each one with its studies and its limits.
Here's what the published studies say about each ingredient, and where the evidence stops short.
The year GHK was first isolated from human plasma. Levels of it in the body drop as we age. Human studies of the topical form are mostly small skin trials.
The number of amino acids in acetyl octapeptide-3. Its first six match acetyl hexapeptide-8. The human studies so far are small, and most test it in microneedle patches rather than serums.
The year NAD was discovered, in yeast. Levels of NAD+ in the body fall as we age. Studies of NAD+ applied to the skin are still early.
The share of the body's hyaluronic acid found in the skin, where it helps hold water. In older skin it fades most from the outer layer. A mask adds hydration at the surface.
Tell us about your skin and the products you're curious about. We'll reply by email with a routine that fits.