OneSkin Rich Cream Review: First Impressions of the OS-01 Face Rich Cream
Published September 22, 2026
OneSkin sent me the OS-01 Face Rich Cream ahead of its launch, so this OneSkin Rich Cream review is an early one. I have the jar, I have started using it and I have read the full research file, but I have not had it long enough to tell you what it did to my skin. What I can do right now is show you what is in it, explain how it differs from the OS-01 Face Moisturizer I have used daily since February 2025, separate the lab claims from the clinical ones and tell you whether the $170 price makes sense. I will update this with real results as I go.
About the author: I am Cheryl McColgan, founder of Heal Nourish Grow. I am a NASM certified personal trainer and E-RYT 500 yoga instructor with more than 30 years in the health and wellness space. I have used the OneSkin line daily since February 2025 and I write about what the evidence supports rather than what the packaging says.
My Rating: 4.0 out of 5
Preliminary. This rating reflects three years with the OneSkin line and the published research behind the OS-01 peptide, not long-term use of this specific cream. I will revisit it once I have months behind me.
Quick Verdict: OS-01 Face Rich Cream
Best for: Dry, depleted or barrier-compromised skin, particularly if your old moisturizer stopped being enough somewhere in your 40s. Not an upgrade everyone needs.
What it gets right: This is a different formula, not the Face Moisturizer in a thicker base. It swaps hyaluronic acid and niacinamide out for ceramide NP, cholesterol, phytosphingosine and ectoin, which is a barrier-lipid approach rather than a humectant one. The airless pump is more sanitary than a jar you dip into. First impression on texture is good and it feels more hydrating than the original.
Where it falls short: $170 for 50 mL is 45 percent more than the Face Moisturizer at the same size, and the directions tell you to use a generous layer on face, neck and chest twice a day, so it will not last the way the original does. The headline percentages are ex vivo lab measurements, not results in people. The human data is 29 participants over six weeks, self-assessed.
Price: $170 retail, $145 at launch. 50 mL / 1.7 fl oz.
My status: Using it now. Results update to follow.
Table of Contents-Click to Expand
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What the OS-01 Face Rich Cream Is
The Rich Cream is OneSkin's new entry in the face category, launching September 22, 2026. It sits alongside the OS-01 Face Moisturizer rather than replacing it, which matters, because the two are built differently and aimed at different skin.
| Size | 50 mL / 1.7 fl oz |
| Price | $170 retail, $145 at launch |
| Packaging | Airless pump jar, no dipping fingers in |
| Peptides | Decapeptide-52 (OS-01) plus hexapeptide-9 |
| Directions | Generous layer on clean dry skin, face, neck and chest, twice daily |
| Other | National Eczema Association accepted. Made in the USA with globally sourced components. Patents US 12,268,746 and US 12,268,747 |
One packaging note worth mentioning, it is an airless pump rather than an open jar. Every time you dip fingers into an open pot of cream you introduce bacteria into a product you then spread across your face for the next three months. The pump avoids that entirely, and on a cream at this price I would have been annoyed to get a jar.
Rich Cream vs OS-01 Face Moisturizer: The Part That Matters
If you already own the OS-01 Face Moisturizer, this is the only question you actually care about. I sat down with both ingredient lists and the answer is more interesting than I expected: these are not the same formula at different thicknesses. They are two different approaches to the same problem.
| OS-01 Face Moisturizer | OS-01 Face Rich Cream | |
|---|---|---|
| Approach | Humectant loading, pulls water in | Barrier lipid replacement, holds water in |
| Hyaluronic acid | Three molecular weights | None |
| Niacinamide | Yes | None |
| Barrier lipids | No | Ceramide NP, cholesterol, phytosphingosine |
| Peptides | OS-01 alone | OS-01 plus hexapeptide-9 |
| Texture | Lightweight gel | Rich cream, shea and squalane base |
| Price, same 50 mL | $117 | $170 |
Read that hyaluronic acid row again, because it is the surprising one. OneSkin markets the Rich Cream on promoting your skin's own hyaluronic acid production and the formula itself contains no hyaluronic acid at all. That is consistent rather than contradictory. A humectant like hyaluronic acid sits on the surface pulling water toward it, which works beautifully when your barrier can hold that water. If your barrier has thinned out, the water you pulled in evaporates and you are tight again by lunchtime. Ceramides, cholesterol and phytosphingosine are the lipids skin actually uses to build that barrier, and ectoin is an osmolyte that helps cells hold water.
So the framing is this. The Face Moisturizer adds water. The Rich Cream is trying to fix the thing that keeps letting water out. If your skin is normal and you like the lightweight gel, the Face Moisturizer is not a lesser product and you should stay put. If you are the person whose skin goes tight within an hour of applying something, or have more mature skin, the Rich Cream is built for you specifically.
My First Impressions
I have had this cream for a short time. These are texture and feel impressions, not results. Anything about fine lines, firmness or density will have to come later after I've used it for longer.
- It is noticeably more hydrating than the Face Moisturizer. That is the clearest early difference and it was immediately noticeable.
- The texture is good. It is a rich cream that still melts in rather than sitting on top, which is the thing rich creams usually get wrong.
- The pump is the right call. Sanitary, no finger dipping and it meters out a consistent amount.
What I will report back on: whether it holds hydration through a full day, whether it pills under sunscreen and makeup the way heavier creams often do, how fast a 50 mL jar actually goes at the directed usage, and whether anything changes in my skin over a few months. Check back, or subscribe below and I will keep you updated.
The Density Shift Claim, Examined
OneSkin built the entire campaign around what they call the density shift: the idea that as senescent cells accumulate, skin loses collagen, elastin, hyaluronic acid and barrier proteins and the result is skin that cannot hold water.
The underlying biology holds up. Two of the studies they cite are discussed below.
The water loss figure comes from a study in Pharmaceutical Research which found that older skin lost roughly 29 percent more water at baseline and took about twice as long to recover after the barrier was disrupted. That is accurate. What the marketing does not tell you is that the comparison was between people aged 69 to 85 and people aged 19 to 42, with 44 participants total, measured on forearm skin in 1989. It describes the far ends of the curve, not what happens to a 45 year old. I think the claim is directionally fair and the way it gets attached to a “sometime in your 40s” hook is a stretch.
The hyaluronic acid figure checks out more cleanly. A study in Carbohydrate Research measuring skin composition across ages found hyaluronic acid fell from about 0.030 percent of skin weight in the 19 to 47 group to roughly 0.007 percent at age 75, which is the 77 percent decline they quote.
There is a third stat in their materials, a 30 percent drop in collagen during the first five years of menopause. That claim does have a citation trail.
It traces to a 2013 review in Dermato-endocrinology, which says that type I and III skin collagen is thought to decrease by as much as 30 percent in the first five years after menopause. The hedge in that sentence is the author's, not mine. The review points to two primary papers: Brincat and colleagues in the British Journal of Obstetrics and Gynaecology, who found skin collagen declined in relation to menopausal age but not chronological age in untreated women, and Affinito and colleagues in Maturitas, who biopsied 32 women and found collagen types I and III fell with years since menopause. Neither paper reports an exact 30 percent figure.
There is also a tension inside the review itself. Two sentences before the 30 percent line it reports collagen content falling by about 2 percent per postmenopausal year. Five years at 2 percent a year is closer to 10 percent than 30. Both numbers sit in the same paragraph without being reconciled.
So here is my take. Skin collagen does decline after menopause and the decline lines up with years since menopause rather than chronological age, which is the more useful finding anyway because it points at the hormonal transition rather than at birthdays. Whether it's exactly around 30 percent or not isn't clear.
What the Research Actually Supports
Here is where I want to draw a hard line between two kinds of number, because OneSkin presents them side by side and they are not the same thing.
The big percentages are lab measurements, not results
The headline figures, a 28 percent increase in collagen, 108 percent more elastin, 294 percent more barrier protein, come from ex vivo lab studies measuring biomarkers in skin samples. OneSkin's own footnote says it directly: lab findings may not reflect outcomes in human use. Those are real measurements on real tissue and they are not a claim about what will happen to your face. Anyone quoting “+294%” at you without that sentence attached is misrepresenting their own source material.
The human data is small and self-reported
The clinical figures (100 percent saw improved hydration, 97 percent saw reduced fine lines) come from a double-blind third-party study of 29 participants aged 43 to 65 over six weeks. Twenty-nine people is a small study, six weeks is a short window for a mechanism that works on cellular turnover and “saw” and “agreed” describe participant self-assessment rather than instrument readings. None of that makes it worthless, it just makes it preliminary.
The peptide itself has better evidence than this cream does
This is the part that makes me willing to try it. OS-01, listed on the label as Decapeptide-52, has a real published file behind it. A study in npj Aging reported that after screening more than 900 peptides, the one they selected reduced senescence markers in human skin cells and lowered the DNA methylation age of aged skin samples. This research is the whole reason I started using OneSkin in the first place.
A 12-week split-face trial in the Journal of Cosmetic Dermatology found reduced transepidermal water loss and reduced periorbital wrinkles on the peptide side in 22 participants, though every author except two academic collaborators works for OneSkin and texture and radiance improved on both sides of the face with the peptide side merely doing better.
The one I think deserves more attention than it gets is the safety paper. A study in Toxicology Reports put the peptide through genotoxicity testing plus a repeated insult patch test in 54 participants that produced no visible skin reactions. If your question is whether it is sensible to put a novel peptide on your face twice a day, that is the paper that answers it.
And one thing about me you should factor in
I have been on hormone therapy since October 2020, including transdermal estradiol. A review in Climacteric summarizing decades of research found that estrogen treatment repeatedly increased skin collagen content, dermal thickness and elasticity in postmenopausal women. That said, the estrogen has been stable since 2020 rather than newly started, so a change that shows up now is more plausibly the cream than the hormones. It is still not a clean experiment. Any creator showing you a dramatic skin transformation without mentioning what else they are taking or doing is giving you an incomplete picture.
If Senescent Cells Matter for Skin, What About the Rest of You?
The same biology this cream targets on your face is happening everywhere else. Grab my Longevity Supplement Stack: what I take, what I skip and what the research does and does not support, including the two supplements the biggest trials say do not work.
Who Should Buy It and Who Should Skip It
Consider it if: your skin feels tight within an hour of moisturizing, you have mature skin, you get flaky year-round rather than seasonally, other rich creams you have tried sit on top and disappear by lunch, or your old routine stopped being enough somewhere in the last few years and you have not been able to work out why.
Skip it if: the OS-01 Face Moisturizer is working for you. This is a lateral move for a different skin type, not a direct upgrade and at $170 it is an expensive way to find that out. Skip it also if you do not yet wear sunscreen daily, because nothing in this jar will outperform sun protection you are not using.
If you are expecting loose skin to tighten, this will not do that and neither will anything else topical. That is a device or in-office conversation. I have written about the at-home laser route separately.
Price and Whether It Is Worth It
$170 retail, $145 at launch, for 50 mL. The OS-01 Face Moisturizer is $117 for the same 50 mL, so the Rich Cream carries a 45 percent premium for the same volume of product, although you do get a discount with my code and the option to subscribe and save.
There is a second cost issue nobody is talking about. My current OneSkin face moisturizer lasts about six months on one to two pumps twice a day. The Rich Cream directions say a generous layer on face, neck and chest, twice daily. That is a substantially larger application area and a larger amount per application. I do not yet know how fast a jar goes, and I will report the real number once I have burned through one, but do not assume it stretches the way the original does. A more expensive product used faster is a meaningfully different monthly cost.
The one real piece of good news on price: the subscription discount and my code stack. Subscription takes 15 percent off, then the code takes another 15 percent off that subtotal, which works out to roughly 27.75 percent off retail. Most brands block codes on subscription orders. This one does not.
Is it worth it? I cannot answer that for you yet. What I can say is that the formulation logic is sound, the peptide behind it has more published evidence than almost anything else in the category and the price is a bit high even by OneSkin's standards. If your barrier is the problem, this is a reasonable thing to try. If it is not, save your money.
Stacks on subscription. 30-day money-back guarantee.
How I Will Update This Review
I am using this cream daily starting now and I will come back and rewrite this properly once I have months rather than days behind me. Specifically I will report how long a 50 mL jar lasts at the directed usage, whether hydration holds through a full day, whether it wears under sunscreen and makeup and whether my skin changes in any way I can fairly attribute to it rather than to everything else I do.
If it turns out not to be worth $170, I will say that here. In the meantime, my full OneSkin review covering every product I use has dated before and after photos and a lot more history behind it.
frequently asked questions
How Much Is the OneSkin Rich Cream?
The OS-01 Face Rich Cream is $170 at retail for 50 mL, with a $145 launch price. Subscription takes 15 percent off and my code HEALNOURISHGROW stacks another 15 percent on top of that, which comes to roughly 27.75 percent off retail. For comparison, the OS-01 Face Moisturizer is $117 for the same 50 mL.
What Is the Difference Between the Rich Cream and the OS-01 Face Moisturizer?
They use different approaches. The Face Moisturizer is built around humectants including hyaluronic acid in three molecular weights plus niacinamide, so it pulls water into skin. The Rich Cream contains neither, and instead uses barrier lipids (ceramide NP, cholesterol, phytosphingosine) plus ectoin to help skin hold water it already has. The Rich Cream also adds a second peptide, hexapeptide-9, alongside OS-01.
Should I Switch From the Face Moisturizer to the Rich Cream?
Not automatically. If the Face Moisturizer is working for you, stay with it. The Rich Cream is aimed at dry, depleted or barrier-compromised skin, the kind that goes tight within an hour of applying something. It is a lateral move for a different skin type rather than an upgrade, and it costs 45 percent more for the same volume.
Does the OneSkin Rich Cream Contain Hyaluronic Acid?
No, and that is deliberate. It promotes your skin's own hyaluronic acid production according to OneSkin's lab data, but the formula itself contains no hyaluronic acid. A humectant only helps if your barrier can hold the water it attracts. The Rich Cream targets the barrier instead, using ceramides, cholesterol, phytosphingosine and ectoin.
Are the +28% Collagen and +294% Barrier Protein Claims Real?
They are real measurements, but not of results in people. Those figures come from ex vivo lab studies measuring biomarkers in skin samples, and OneSkin's own footnote states that lab findings may not reflect outcomes in human use. The human study behind the cream is separate: 29 participants aged 43 to 65 over six weeks, with outcomes based on participant self-assessment.
How Big Is the OneSkin Rich Cream?
50 mL, or 1.7 fl oz, in an airless pump jar rather than an open pot. The pump matters more than it sounds, because dipping fingers into an open jar introduces bacteria into a product you then spread across your face for months.
Have You Actually Used It?
I have it and I have started using it, but not for long enough to report results. My early impressions are that it feels more hydrating than the Face Moisturizer, the texture melts in rather than sitting on top, and the pump is a good design choice. Anything about fine lines, firmness or density at this stage would be invented, so I am waiting and will update this review with real results.
Is the Rich Cream Safe for Sensitive Skin?
It is accepted by the National Eczema Association and is fragrance-free like the rest of the line. The OS-01 peptide has published safety data behind it, including genotoxicity testing and a repeated insult patch test in 54 participants with no visible reactions. The label carries the standard warnings: external use only, avoid direct contact with eyes, discontinue if irritation occurs. Patch test before applying anything new to your whole face.