Rapamycin · skin
Topical rapamycin and rapamycin cream for skin
Topical rapamycin has one randomized anti-aging trial behind it: 0.001% on the backs of the hands for six to eight months, with 8 analyzable participants. Everything sold above that strength is unstudied for skin aging.
What the evidence supports, in four lines
The trial behind the cosmetic claim ran six to eight months at a 0.001% strength (per Chung et al. 2019). Clinics sell 0.01% to 1%, which is 10 to 1,000 times that strength.
On this page
Rapamycin skin cream has a real dermatology track record behind it and very little aging evidence in front of it. This page keeps those two apart, and we sell nothing on it.
What is topical rapamycin?
It is sirolimus formulated to be applied to the skin rather than swallowed, so the drug acts locally in skin cells.[6] It is used on-label as Hyftor gel for facial angiofibromas, and off-label as compounded sirolimus cream for skin aging.
The appeal is simple: oral rapamycin acts throughout the body, with the systemic trade-offs that implies. A cream aims the same mechanism at the tissue you can see, and at low strengths the trial evidence suggests it stays there.[7]
How we assess topical rapamycin claims
- Sample sizes, not just significance. A p-value from eight people is reported as a p-value from eight people.
- Every health claim cited to a primary source, line by line.
- No prescription sales. We do not sell, supply or facilitate any prescription drug, and earn nothing from the routes below.
- Dated corrections. When the evidence changes, the page changes and says so.
We have no in-house clinician and claim none. What we have is the literature, read carefully.
Does topical rapamycin work?
On the only randomized evidence, there is a genuine mechanistic signal from very few people. The trial enrolled 36 adults over 40, 17 completed the protocol, and 8 provided analyzable tissue.[1]
Show the numbers as a table
| Measure | Value |
|---|---|
| Enrolled | 36 |
| Completed protocol | 17 |
| Analyzable tissue | 8 |
In those samples the senescence marker p16INK4A fell (p = 0.008) and collagen VII rose (p = 0.0077). Participants also showed fewer fine wrinkles and better skin tone.
They also showed increased dermal volume, less sagging and reduced vein prominence, and no treatment-related adverse events were reported. Those are secondary observations in a handful of people, worth noting and not worth building a routine on.
| What was measured | Result | How to read it |
|---|---|---|
| p16INK4A, senescence marker | Reduced, p = 0.008 | The primary endpoint: less senescent-cell burden in treated skin. |
| Collagen VII | Increased, p = 0.0077 | Anchors epidermis to dermis and declines with age. |
| Blood rapamycin | None detectable, limit 1 ng/mL | No measurable systemic exposure at this strength. |
Read plainly, this is the beginning of an evidence base. It has not been replicated, and no confirmatory trial has followed in the years since, which is the honest context for any clinic that describes the cream as proven.
One exploratory trial · 8 analyzable participants · not replicatedThe trial was on hands, not faces
Participants applied 0.5 cc of 0.001% rapamycin to the dorsal hands every 24 to 48 hours for six to eight months.[1] Hand skin differs from facial skin in thickness, sebum and sun history, so every facial claim is an untested extrapolation.
The concentration problem nobody selling it explains
Published sirolimus skin formulations span 0.001% to 8%, an eight-thousand-fold spread, and no comparative dose-response trial has set an optimal strength.[2] The only anti-aging trial sits at the very bottom of that range.
Clinics commonly offer 0.01%, 0.25% and 1%. Higher is not better-evidenced here; it is simply unstudied for this purpose.
Concentration, evidence and what is actually sold
| Concentration | Used for | Evidence behind it | Where you meet it |
|---|---|---|---|
| 0.001% | Skin aging, dorsal hands | One exploratory trial, 8 analyzable participants[1] | Rarely offered |
| 0.01% | Facial anti-aging | No aging trial at this strength | Telehealth and compounding menus |
| 0.2% | Facial angiofibroma | Approved indication, not aging[3] | Hyftor, on prescription |
| 0.25% to 1% | Facial anti-aging | No aging trial at these strengths | Common commercial tiers |
| Up to 8% | Various dermatologic uses | Heterogeneous case literature[2] | Specialist compounding |
If a clinic will not tell you which concentration it dispenses, you cannot place it on this table. That is reason enough to ask before paying. The same reasoning applies to oral dosing, where studied ranges are equally specific and equally often rounded up in practice.
How rapamycin acts on skin at the cellular level
Rapamycin inhibits a nutrient-sensing kinase that drives cell growth. In aging skin, senescent keratinocytes show elevated activity of that pathway alongside accumulating p16INK4A, and local inhibition is intended to interrupt the loop.
Skin autophagy and barrier effects are often cited too; they are plausible, but this human trial did not demonstrate them. We separate the two in our explainer on how rapamycin inhibits mTOR.
Is sirolimus cream available over the counter?
No. Every sirolimus skin formulation is prescription-only in the United States, and sirolimus cannot lawfully appear on a US cosmetic ingredient list. If it is named on a product sold without a prescription, treat that as a red flag.
Can I buy rapamycin over the counter?
No, and the same applies to tablets. Oral sirolimus is licensed to prevent transplant rejection,[9] and we do not recommend any route that bypasses a clinician.
Hyftor: the one FDA-approved topical sirolimus, and what it is approved for
Hyftor is sirolimus gel 0.2%, licensed for facial angiofibroma in tuberous sclerosis complex in patients aged 6 and over.[4] When a clinic cites FDA approval while selling an anti-aging cream, the approval belongs to a different product and condition.
The cosmetic case, meanwhile, rests on a trial that lost more than half its 36 enrollees. That is too small to settle a strength or schedule, so any prescribed protocol is a clinician's judgment rather than trial evidence.
- What this does not say:
- Manufacturer page for the indication; the trial is exploratory with high dropout, and larger cosmetic trials may exist unpublished.
The dermatologic track record predates the longevity interest
Topical sirolimus was used for angiofibromas well before anyone framed it as anti-aging, and has been studied in vitiligo. That history is the strongest honest argument for it: facial safety is not being invented from scratch.
It is also why the aging evidence looks thin by comparison. The dermatologic literature sets a bar that the cosmetic literature has not yet met, and a strong record for one condition does not transfer automatically to another.
How much of it gets into your blood
In the 0.001% trial, no blood sample contained detectable rapamycin at an assay limit of 1 ng/mL.[1] Reviews of the wider range report measurable levels that stay below the 4 ng/mL immunosuppressive threshold.[2]
Both statements are true, and together they say something the marketing does not. The reassurance about systemic absorption is strongest at the lowest strengths and weakens as concentration rises, which is one more reason to know which strength you have been given.
What is the downside of rapamycin?
The common side effects are local: dryness, peeling, redness and itching, usually mildest after the first week. Sun sensitivity does not fade, so daily broad-spectrum SPF 30 stops being optional.
Then there is the downside no product page lists. At every strength above 0.001%, the person applying it is the dose-finding study, because that study has not been done.
Who this is not for
- Anyone pregnant, planning pregnancy or breastfeeding. A hard contraindication.
- Anyone immunosuppressed. A prescriber's call, not a casual one.
- Anyone unwilling to wear sunscreen daily.
- Anyone wanting a result inside eight weeks. The trial measured nothing before month six.
- Anyone who cannot get a straight answer on concentration.
Topical rapamycin vs tretinoin
On evidence weight this is not close. Topical retinoids carry decades of large randomized trials for photoaging; the sirolimus cream has one exploratory trial with eight analyzable participants.
They also act differently: retinoids drive cell turnover, while rapamycin appears to target the senescent phenotype, a theme we unpack alongside collagen and skin aging. No head-to-head trial exists.
Can they be layered?
Clinic guidance commonly suggests alternating nights, because both raise photosensitivity. Avoid peels, microdermabrasion and laser work on treated skin. That is prescriber territory, not a protocol we issue.
Can you get rapamycin naturally?
No. Rapamycin is made by Streptomyces hygroscopicus, a soil bacterium collected on Rapa Nui.[9] No food or plant contains it; supplements sold as substitutes are covered in natural alternatives to rapamycin.
A note on before-and-after photos
Most striking imagery comes from angiofibroma case series, not aging trials. Lighting and angle move apparent wrinkle depth more than most actives, which is why the trial measured a protein in a biopsy.[1] Ask what was measured, for how long, in how many people.
Where can I buy rapamycin cream?
Only through a prescription, and there is no fourth option. There are three legitimate US routes, and we supply none of them and earn nothing from any of them.
- A compounded prescription. A clinician writes for a specific concentration and a compounding pharmacy prepares it.
- Hyftor, for its licensed indication. Dispensed through normal pharmacy channels.[3]
- Licensed telehealth. A medical review, a prescription, and a certified pharmacy.
What compounded actually means
Compounded drugs are not FDA-approved or reviewed for safety, efficacy or quality before dispensing. Two kinds of facility make them.
| Facility | What it makes | What to ask |
|---|---|---|
| 503A pharmacy | Your individual prescription | Certificate of analysis for your batch |
| 503B outsourcing facility | Bulk batches under stricter manufacturing rules | Batch testing records and potency tolerance |
Ask which made yours, and ask for the certificate of analysis covering purity, potency and trace metals. A compounder that will not answer has told you enough.
Buying from overseas pharmacies
Personal importation of unapproved prescription drugs into the United States is generally not lawful. There is no chain of custody and no recourse if potency is wrong, on a molecule where concentration is the whole question. We do not link to these sellers.
What it realistically costs
Pricing moves with concentration, quantity and whether a consultation is bundled, so get a written quote. Insurance rarely covers compounding for a cosmetic indication. Budget for six to eight months, the duration of the only supporting trial.
How people actually use it
Clinic instructions commonly describe a pea-sized amount on clean, dry skin in the evening, starting two to three nights a week, with SPF 30 every morning. That is reported practice; your prescriber's instructions override it.
What a six-month trial of it looks like
Show the numbers as a table
| When | Event | Detail |
|---|---|---|
| Start | 0.001% on hands | every 24 to 48 hours |
| Months 1-5 | Nothing measured | no biopsies yet |
| Months 6-8 | Biopsies taken | p16INK4A down |
| After | Unstudied | no washout or follow-up |
Someone already on oral rapamycin has a total-exposure question for their clinician. Someone new to active ingredients should probably not start with the one backed by eight analyzable participants.
Should you try it? An honest decision aid
- If you want proven wrinkle data, a topical retinoid has the far larger evidence base.
- If you have tuberous sclerosis angiofibromas, an approved sirolimus gel exists for exactly that. See a dermatologist.[4]
- If you want the trial's evidence specifically, that means 0.001%, on the hands, for six to eight months.
- If you are drawn to the mechanism, read the senescence argument and decide whether n = 8 justifies the spend.[5]
- If a clinic will not state the concentration, you have your answer.
Questions to take to a prescriber
- What concentration are you prescribing, and what evidence supports it for skin aging?
- Which pharmacy compounds it, 503A or 503B, and may I see the certificate of analysis?
- How will we judge whether it is working, and by what date?
- What are the stopping criteria?
- Does this displace something with better evidence?
Informational only, not medical advice
If you arrived from an old rapamycin-cream link, the position has not moved much: locally acting, prescription-grade, with a real dermatologic history and one encouraging trial in eight people behind the cosmetic claim. The oral picture is a different and better-studied question, covered in the main rapamycin evidence guide.
Frequently asked questions about topical rapamycin
Does the trial evidence apply to facial skin?
Not directly. Participants applied 0.5 cc of 0.001% rapamycin to the backs of their hands every 24 to 48 hours for six to eight months. Hand skin differs from facial skin in thickness, sebum and sun history, so every facial claim is an untested extrapolation from that one exploratory trial.
How many people finished the anti-aging trial?
Fewer than half. The trial lost more than half of its 36 enrollees, leaving 8 analyzable participants for the main comparison. That is too small to settle a strength or a schedule, so any prescribed protocol reflects a clinician's judgment rather than trial evidence.
Is sirolimus cream available over the counter?
No. Sirolimus is the generic name for rapamycin and every skin form is prescription-only in the United States. A product sold over the counter as rapamycin cream either does not contain the drug or is not being sold lawfully.
Can I buy rapamycin over the counter?
No, and that applies to the tablets as well as the cream. Oral sirolimus is licensed for the prevention of transplant rejection, and every longevity use of it is off-label and requires a prescriber.
Do before-and-after photos show that it works?
No. Most striking imagery comes from angiofibroma case series, not aging trials, and lighting and camera angle move apparent wrinkle depth more than most actives do. The aging trial measured a protein in a skin biopsy instead. Ask what was measured, for how long, and in how many people.
What should I ask a clinic before paying for a compounded cream?
Ask which concentration it dispenses and why that strength, when the only aging trial used 0.001% and clinics commonly sell 0.01% to 1%. If a clinic will not say which concentration it sends, you cannot place the product against any evidence, which is reason enough to ask before paying.
If the trial used 0.001%, is a 1% cream better or just unstudied?
That is a prescriber's decision. The only randomized anti-aging trial used 0.001%, published formulations run as high as 8%, and no comparative dose-response trial has been run. Strengths above 0.001% are not better-studied for aging, they are unstudied.
How much does topical rapamycin cost per month?
Prices vary with concentration, quantity and whether a consultation fee is bundled, so check the current quote from the prescriber. Insurance rarely covers compounding for a cosmetic indication. Budget across six to eight months, because that is the duration the trial actually ran.
What is Hyftor, and is it the same as a compounded rapamycin cream?
Hyftor is sirolimus gel 0.2%, the only FDA-approved skin form of the drug, licensed for facial angiofibroma in tuberous sclerosis complex. It is not approved for skin aging, and a compounded anti-aging cream is a different, unapproved product.
What happens if I stop using it?
Nobody has studied it. The trial had no washout arm and no follow-up after treatment ended, so there is no evidence on whether the biomarker changes persist or fade.
Is topical rapamycin better than tretinoin?
On evidence weight, no. Retinoids carry decades of large randomized trials for photoaging, while the rapamycin cream has one exploratory trial with eight analyzable participants. They also act differently, retinoids on cell turnover and rapamycin on the senescent phenotype, and no head-to-head trial has compared them.
Can I use a rapamycin cream and a retinoid together?
Clinic guidance commonly suggests alternating nights rather than layering them on the same night, because both raise photosensitivity. Avoid chemical peels, microdermabrasion and laser treatments on treated skin. This is a prescriber conversation, not a protocol we issue.
Does rapamycin cream get into your bloodstream?
In the 0.001% trial, no blood sample contained detectable drug at an assay limit of 1 ng/mL. Reviews covering the wider concentration range report measurable but sub-threshold levels against a 4 ng/mL immunosuppressive threshold. The reassurance is strongest at the lowest concentrations.
How long before a rapamycin cream does anything?
The trial ran for six to eight months before biopsies were taken, and nothing was measured earlier. Expect dryness in the first fortnight and no measured evidence of benefit before month six. Anyone promising visible change in two weeks is describing marketing.
Can I use sirolimus cream if I already take oral rapamycin?
That is a question for the clinician managing your oral protocol, because it changes the total exposure picture. The skin trial measured systemic absorption and found none at 0.001%, but it did not enroll people already taking the drug.
How do I know the compounding pharmacy made it correctly?
Ask whether it is a 503A pharmacy compounding against your individual prescription or a 503B outsourcing facility producing in bulk. Then ask for the certificate of analysis covering purity, potency and trace metals. A compounder unwilling to answer is the answer.
Sources and how we checked them
9 sources, all link-checked; oldest check
- Topical rapamycin reduces markers of senescence and aging in human skin: an exploratory, prospective, randomized trial. Chung CL et al. GeroScience 2019;41(6):861–869.n=36 enrolled, 17 completed, 8 gave analyzable tissue; 0.001% (10 uM) applied to dorsal hands every 24-48h for 6-8 months; lower p16INK4A (p=0.008), higher collagen VII (p=0.0077); no detectable blood rapamycin at a 1 ng/mL assay limit.Verified Sep 14, 2026
- Repurposing rapamycin: topical mTOR inhibition for skin senescence and proliferative pathologies. Review discussion, Rapamycin Longevity News, 2026.Reports compounded formulations spanning 0.001% to 8%, blood levels below the 4 ng/mL immunosuppressive threshold, and no comparative dose-response trials.Verified Sep 14, 2026
- HYFTOR (sirolimus topical gel) 0.2% - uses, benefits, safety. Nobelpharma America.The first and only FDA-approved topical sirolimus; indicated for facial angiofibroma in tuberous sclerosis complex, not for skin aging.Verified Sep 14, 2026
- Sirolimus (topical application route): description, side effects and dosage. Mayo Clinic.Authority reference for the licensed topical indication.Verified Sep 14, 2026
- Rapamycin for the aging skin. Blagosklonny MV. Aging (Albany NY) 2019.Review arguing for rapamycin-containing cream on selected areas such as hands and face.Verified Sep 14, 2026
- Sirolimus - NCI Drug Dictionary. National Cancer Institute.Entity reference for sirolimus as the generic name of rapamycin.Verified Sep 14, 2026
- Rapamycin for longevity: the pros, the cons, and future perspectives. Roark KM, Iffland PH. Frontiers in Aging 2025;6:1628187.Peer-reviewed review, cited 31 times.Verified Sep 14, 2026
- Targeting aging with rapamycin and its derivatives in humans: a systematic review. Lee DJW et al. The Lancet Healthy Longevity 2024.Systematic review, cited 189 times.Publisher blocks automated checks · last tried Sep 14, 2026
- Sirolimus. Wikipedia.Verified Sep 14, 2026
Every link above is re-requested on a schedule by an automated checker; the date shown is when it last answered. Publishers that block automated requests are marked as such rather than reported broken. Our editorial standards explain how a source gets cited here in the first place.
Filed by the Rapamycin.store evidence desk. Each source is re-checked when the page is reviewed.
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