CoreAge Rx / Bounce Back
COPPER PEPTIDE 0.2%
Copper peptide at 0.2% — four times the concentration used in the best controlled study we could find, and the best-dosed single active we have assessed. Compounded in the US, dispensed after a physician review, positioned for night-time barrier work. The full ingredient list is still not published.
Buy it. The formula, the disclosure and the price all hold up.
ASSESSED ON 75% OF THE MODEL. 2 CRITERIA LEFT UNSCORED — SEE SCORING FOR WHY.
The concentration is published and it is a good one. Ask for the full ingredient list and the fill weight before your second month.
The verdict
Start with the number, because the number is the product. GHK-Cu — copper tripeptide-1 — is one of the more interesting molecules in cosmetic chemistry, with real mechanistic work behind it and controlled clinical support, including a double-blind split-face study in sixty women that reported meaningful firmness and fine-line improvement at twelve weeks. That study used 0.05%. This product uses 0.2%, four times as much, and sits inside the 0.2 to 2% band used in cosmetic preparations while most commercial serums run at 0.01 to 0.05%. After nine reviews of actives dosed below their trial range, this is the first one dosed comfortably above it.
The rest of the product is built the way the ingredient wants to be used. Copper peptides are best supported for barrier repair and matrix support rather than for rapid visible change, and this is sold as a night-time recovery cream rather than as an overnight transformation. The directions are specific and correct — thin layer on clean dry skin, start slowly, adjust to tolerance, sunscreen during the day — and the timeline the page sets is twelve weeks, which is the clinical read-out rather than a marketing one.
The physician review here is a dispensing service, not a regulatory requirement, and the company would do better to say so plainly. Copper peptides are permitted in cosmetic formulations in both the US and the EU without concentration limits, and nothing about GHK-Cu at 0.2% requires a prescriber. Sold as supervised dispensing with compounding and delivery included, $64.99 a month is a defensible premium for the people who want that. Sold as though the prescription were pharmacologically necessary, it claims something the ingredient does not support.
One gap remains, and it is the same one across this company's range: no full ingredient list, and no fill weight. GHK-Cu is pH-sensitive and conventionally kept away from direct acids and ascorbic acid, so the vehicle is a fair question, and without a container size cost per application cannot be computed. Neither changes what the active is or what it is dosed at, and both are one line of copy from being closed.
- 0.2% GHK-Cu is four times the dose used in the best controlled study we found — the best-dosed active in the register.
- Copper peptides are a legitimately interesting active with real mechanistic work and controlled clinical support behind them.
- Night-time, barrier-focused positioning matches what the ingredient is actually supported for rather than overselling it.
- The page sets a twelve-week expectation, which is the clinical timeline rather than a marketing one.
- Directions are sound: start slowly, adjust to tolerance, thin layer on clean dry skin, sunscreen during the day.
- A physician review before dispatch, US compounding and included delivery are all clearly described.
- The company names its medical entities in the footer, which is more corporate transparency than most telehealth brands offer.
- No full ingredient list published on the page, elsewhere on the site, or in third-party databases.
- GHK-Cu is pH-sensitive and acid-incompatible, and none of the formulation detail that would settle sequencing is published.
- No container size, so cost per application cannot be calculated.
- The prescription gate is a dispensing service rather than a regulatory requirement, and the page does not say so.
- No clinical data cited for the finished product.
- Over-the-counter copper peptides at comparable concentrations cost considerably less.
Every active, assessed
- Copper Peptide (GHK-Cu)0.2%
Copper tripeptide-1 — signals fibroblasts, supports matrix synthesis and barrier repair
- BENCHMARK
- 0.2%–2% in cosmetic preparations; commercial serums commonly 0.01%–0.05%
- ASSESSMENT
- A well-chosen, genuinely useful concentration — four times the 0.05% used in the best controlled study we found, and inside the cosmetic preparation range rather than at the token end. This is the best-dosed single active in the register.
- Everything elseNOT PUBLISHED
Vehicle, preservatives, any further actives
- BENCHMARK
- A full INCI list is standard for any cosmetic sold in the US or EU
- ASSESSMENT
- The one open question. No ingredient list was found on the product page, elsewhere on the site, or in third-party databases. Copper peptides are pH-sensitive and are conventionally kept away from direct acids and ascorbic acid, so the vehicle matters here — ask for the list before your second month, and ask how to sequence the cream around a vitamin C serum.
| ACTIVE | CONC. | BENCHMARK | ASSESSMENT |
|---|---|---|---|
| Copper Peptide (GHK-Cu)Copper tripeptide-1 — signals fibroblasts, supports matrix synthesis and barrier repair | 0.2% | 0.2%–2% in cosmetic preparations; commercial serums commonly 0.01%–0.05% | A well-chosen, genuinely useful concentration — four times the 0.05% used in the best controlled study we found, and inside the cosmetic preparation range rather than at the token end. This is the best-dosed single active in the register. |
| Everything elseVehicle, preservatives, any further actives | NOT PUBLISHED | A full INCI list is standard for any cosmetic sold in the US or EU | The one open question. No ingredient list was found on the product page, elsewhere on the site, or in third-party databases. Copper peptides are pH-sensitive and are conventionally kept away from direct acids and ascorbic acid, so the vehicle matters here — ask for the list before your second month, and ask how to sequence the cream around a vitamin C serum. |
Scoring
- EVIDENCE FOR THE ACTIVEWEIGHT 30%95/100
GHK-Cu carries decades of mechanistic work and controlled clinical support, including a double-blind split-face study at 0.05% reporting firmness and fine-line improvement over twelve weeks. We score this criterion on the active and on whether the product is dosed to it, and on the second half nothing else in the register comes close: 0.2% is four times the studied concentration. Short of full marks because the trial base is smaller than a retinoid's and several papers are industry-linked.
- FORMULATION INTEGRITYWEIGHT 20%92/100
The published number is the right number, and everything around it matches what the ingredient is supported for — night-time application, barrier and recovery positioning, a twelve-week expectation, sunscreen during the day. Held back from full marks because the vehicle, the pH and the preservative system are not described, and GHK-Cu is more vehicle-dependent than most actives.
- DISCLOSUREWEIGHT 15%78/100
The headline active carries a concentration, which most compounded skincare declines to do. The directions are specific, the twelve-week timeline is stated rather than implied, the intake is described, and the medical entities are named in the site footer. Two things are still absent and both are easy: the full INCI list and the container size.
- TOLERANCE IN USEWEIGHT 15%NOT ASSESSED
Not assessed. Copper peptides are generally well tolerated, and the directions sensibly advise starting slowly and adjusting to tolerance — but we have not run this through the panel, and without an ingredient list we cannot anticipate reactions to the vehicle.
- TEXTURE & WEARWEIGHT 10%NOT ASSESSED
Not assessed. Requires the product in hand over the full trial window.
- COST PER APPLICATIONWEIGHT 10%85/100
About $780 a year with the consultation, the compounding and delivery included. Over-the-counter GHK-Cu exists for less, and a price-sensitive buyer should take that route — what the subscription buys on top is supervision and dispensing. Priced as a service rather than as a pharmacological necessity it holds up. Marked down only because no container size is published, so cost per application still cannot be computed.
What it is
Bounce Back is a nighttime cream built around copper peptide at 0.2%, sold by CoreAge Rx — a telehealth platform whose catalogue also includes semaglutide, tirzepatide, injectable and nasal NAD+, sermorelin and a range of supplements. You complete an online health questionnaire, a US board-certified physician reviews it, and if approved the product ships. It starts at $64.99 a month, which the company says includes the initial medical evaluation and delivery.
The entity structure in the last two rows is taken from the company's own footer and is normal for US telehealth — a technology platform contracting with independent physician groups. We record it because a site that asks other companies to publish their particulars should publish the ones it finds.
The concentration is the good news
GHK-Cu is a tripeptide bound to copper. It is one of the better-studied molecules in cosmetic chemistry: it signals fibroblasts, it is associated with matrix synthesis and remodelling, and it has a long research literature going back decades.
The clinical picture for topical use is real but modest. A double-blind, split-face study in sixty women aged 40 to 65 reported a 22% increase in skin firmness and a 16% reduction in fine lines after twelve weeks. That study used a 0.05% GHK-Cu serum. Other work reports collagen increases over three months in much smaller samples.
This is the part of the product we have no complaint about. 0.2% is a working dose, not a label decoration.
After nine reviews of actives dosed below their trial range, here is one dosed comfortably above the concentration used in the best study we could find. Getting the dose right is the hardest thing to get right in this category, and it is the thing this product gets right.
What the prescription is actually for
Copper peptides are regulated as cosmetic ingredients. They are permitted in cosmetic formulations in both the United States and the European Union without concentration limits, provided the claims made about them stay non-therapeutic. There is no approved copper peptide drug for skin, and GHK-Cu serums can be bought today without seeing anybody.
So the physician review is not clearing a regulatory hurdle. It is a dispensing service: an intake, a clinician's eye on your history, a compounded product made to a specification and delivered. That is a real service and some people want it. Our objection is to the framing rather than to the gate — the launch materials explain the consultation by saying the formula contains active ingredients, which is not a regulatory basis for anything. Call it supervised dispensing and the proposition becomes honest and easy to price.
Because no full ingredient list is published, we cannot rule out that the compounded formula carries something further alongside the copper peptide. We have graded what the page states rather than what might be in the tube. Publishing the INCI would make this the best-documented product in the range as well as the best-dosed.
A physician gate is not harmful in itself, and here it sits in front of an active that is well chosen and well dosed. The thing to avoid is reading the gate as evidence of potency. The potency is in the 0.2%, and the 0.2% is on the page.
The vehicle question
GHK-Cu depends on its vehicle more than most cosmetic actives, which is why the missing ingredient list is the one gap worth pressing on.
- Copper peptides are pH-sensitive. The pH of the base determines whether the complex stays intact.
- They are conventionally kept away from direct acids and from L-ascorbic acid, which can destabilise the complex — a sequencing question every buyer with a vitamin C serum will have.
- Copper complexes are coloured, so the base and the packaging both matter to stability and to how the product presents over its life.
- Preservative systems and emulsifiers are where most cosmetic irritation actually originates.
None of that is a reason not to use the cream. It is a reason to ask two questions before your second month — what is the full list, and how should this be sequenced around an acid or a vitamin C — and to expect specific answers. A full INCI list is standard practice for cosmetics sold in both the US and the EU, and it is the cheapest points this company will ever pick up.
The price
$64.99 a month is approximately $780 a year, with the consultation, the compounding and delivery included in it. No container size is published, so we cannot express that as a cost per application — the same gap we have found on every product in this register.
Illustrative, using typical retail prices for copper peptide products at comparable or higher concentrations. The subscription figure includes the consultation, the compounding and delivery.
A price-sensitive buyer should look at that chart squarely: an over-the-counter GHK-Cu serum at a comparable concentration costs a fraction of this, and buying one instead is a perfectly sensible decision. What the subscription adds is the clinician review, the compounding and a product that arrives without you thinking about it. That is a service premium rather than a pharmacological one, and it is worth what it is worth to you.
A note on the coverage
Searching for independent assessment of this product returned, repeatedly, the same launch announcement republished across a large number of unrelated news-styled sites. We found no original reporting and no independent testing.
That is an observation about the marketing rather than about the cream, and syndicating a press release is entirely legal and entirely common. We mention it so that a reader looking for a second opinion knows that much of what resembles corroboration is one document repeated. The case for this product rests on its concentration, not on its coverage.
If you are considering it
- Ask CoreAge Rx for the full ingredient list. It is a fair request and it closes the one open question in this review.
- Ask the container size, so you can work out what a month actually costs you per application.
- Ask how to sequence it around a vitamin C serum or a direct acid, and expect a specific answer rather than a general one.
- Do not layer it with vitamin C or an acid in the same routine step. Alternate morning and evening, or alternate days.
- Give it twelve weeks. The controlled data reads out at twelve weeks, not at thirty days.
- If price is the deciding factor, an over-the-counter GHK-Cu at 0.1% or above puts the same class of ingredient on your skin without the consultation.
- If firmness and fine lines are the only goal and you tolerate retinoids, a prescription retinoid still has the stronger evidence base. This is a gentler, barrier-first alternative to one, not a replacement for it.
Where we stand
This is the first product in the register where the pharmacology is the strongest thing on the page rather than the weakest. The active is well chosen, the concentration is four times the studied dose rather than a fraction of it, the night-time barrier positioning matches what the ingredient is supported for, and the directions are the ones we would give.
It sits at 89 rather than higher for two reasons, and neither is about the cream itself. The full ingredient list is not published, which for a vehicle-sensitive active is a real gap. And the fill weight is not published, so nobody — buyer or reviewer — can work out what a month costs per application.
Publish the INCI, publish the size, and describe the consultation as the dispensing service it is rather than a regulatory requirement. Do those three things and there is nothing left to argue about here.
Who this is for
- Someone who wants a well-dosed copper peptide cream and values the physician review, the compounding and delivery being handled for them.
- Someone building a gentler night-time routine than a retinoid allows, or alternating one in.
- Someone who will ask for the full ingredient list and the fill weight, and give the cream twelve weeks.
- You are price-sensitive. The same active is available over the counter at comparable concentration for a fraction of this.
- You will not use a product whose full ingredient list you have not seen. Ask for it first, or buy elsewhere.
- You expect a prescription product to mean a prescription-strength drug. Copper peptide is a cosmetic ingredient, and the gate is a service.
- You want the strongest available evidence for firmness and fine lines. That is still a retinoid, and it is cheaper.
The concentration is published and it is a good one. Ask for the full ingredient list and the fill weight before your second month.
This is an editorial assessment of published information about a prescription product. It is not a diagnosis, not a prescription and not a substitute for your own prescriber. Hydroquinone and tretinoin are drugs. Decisions about them belong with a clinician who has seen your skin.
Sources
- S-01CoreAge Rx — Bounce Back product page Copper peptide 0.2%, $64.99/month, prescription requirement, directions, claims, and the absence of an ingredient list, size or clinical data.
- S-02CoreAge Rx — company site Platform catalogue, consultation process, and the entity structure quoted in the record block.
- S-03Copper peptide (GHK-Cu): clinical uses, stability and compounding Cosmetic preparation range of 0.2–2%, pH sensitivity and stability considerations.
- S-04GHK-Cu clinical evidence and skin benefits The double-blind split-face study (n=60, 0.05%, 12 weeks) reporting firmness and fine-line change, and typical commercial serum concentrations.
- S-05GHK-Cu for skin — research overview Mechanistic background and the smaller collagen-density trial work.