The concentration the science shows it performs best; Daily regeneration at full capacity.
Regenerative Repair Cream at 4% sits at the top of the clinically supported concentration range for topical GHK-Cu — the level at which the peptide is fully engaged, the receptor-mediated signaling cascade is saturated, and sustained twice-daily use maintains the regenerative environment that produces the most significant structural skin changes. For patients committed to a serious, long-term longevity skincare protocol, this is the formulation that operates at the ceiling of what topical GHK-Cu can accomplish.
Size
30g (30-day supply)WHAT TO EXPECT
At 4%, GHK-Cu delivers the maximum concentration within the clinically supported topical range. The 2–4% range is identified in peptide research as the optimal balance between effectiveness and tolerability. Results follow the same biological timeline as lower concentrations, but at the highest sustainable signal intensity.
WEEKS 1–2
Users may notice better skin hydration, reduced redness or irritation, and smoother skin texture within the first two weeks. Some patients experience a more pronounced surface adjustment period at 4% — mild redness or minor texture changes as cell renewal accelerates. This typically resolves within 1–2 weeks.
WEEKS 4–8
Initial improvements in skin texture, fine lines, wrinkles, and overall appearance are typically noticeable at 4–8 weeks. At 4%, collagen stimulation is fully engaged and structural changes in this window tend to be more pronounced than at maintenance concentrations.
WEEKS 8–10
Structural improvements including firmness, fine line reduction, and collagen density changes become visible and are most significant in this window. Clinical research suggests results plateau around week 10 as receptor saturation is maintained and the first major collagen remodeling cycles complete. In controlled studies, participants experienced up to 35% improvement in facial wrinkles and a 70% increase in skin elasticity over 12 weeks of consistent GHK-Cu use.
MONTHS 3–6 AND BEYOND
After 3–6 months, elasticity and firmness continue to improve, and the cumulative effect of sustained twice-daily use becomes most visible. Long-term use leads to maintained collagen production, consistent skin hydration, less visible wrinkles, and improved overall skin health. This is where the 4% protocol distinguishes itself — the sustained maintenance of a full regenerative signal over time.
At 4%, some patients notice a more significant surface adjustment in the first 1–2 weeks as cell renewal accelerates. This is expected at the upper end of the concentration range. Starting at once daily before building to twice daily gives skin time to calibrate. If irritation is persistent, contact your HerTeleMeds clinician — stepping down to 2% is always an option.
ABOUT THE TREATMENT
GHK-Cu functions through receptor-mediated signaling — and the 2–4% concentration range is where clinical research identifies the optimal balance between effectiveness and tolerability for daily topical use. At 4%, the full receptor-mediated signaling cascade is engaged and sustained across both daily applications, maintaining the regenerative environment that produces the most significant structural skin changes over time.
For products designed for daily morning and evening use, 4% is the concentration that best supports a consistent, twice-daily regenerative protocol. This is the formulation for patients who have confirmed their skin’s tolerance to GHK-Cu and are committed to a long-term longevity skincare protocol at maximum supported intensity.
GHK-Cu is a naturally occurring copper-binding tripeptide that modulates tissue repair, collagen production, and cellular signaling in the skin. GHK-Cu naturally occurs in human plasma, saliva, and urine, but levels drop significantly with age — by roughly 60% between age 20 and 60. At 4%, Regenerative Repair Cream restores that deficit to the highest concentration supported by the clinical evidence base for topical daily use.
Drives collagen and elastin synthesis at full clinical intensity — in a human trial comparing topical GHK-Cu to vitamin C and retinoic acid, GHK-Cu resulted in collagen increases in 70% of volunteers, outperforming both comparators. The twice-daily 4% protocol sustains this signal continuously.
• Supports dense, resilient extracellular matrix — structural scaffolding that determines skin firmness, bounce, and visible plumpness • Reduces inflammation and oxidative stress continuously — at twice-daily application, the anti-inflammatory effect is sustained throughout the day • Accelerates repair of cumulative damage — sun exposure, environmental stress, and micro-inflammation that accumulates over decades all respond to a fully and consistently engaged regenerative signal
The 4% formulation is best suited for patients in perimenopause or menopause managing significant active aging concerns — deeper lines, marked laxity, or pronounced loss of density — who have used GHK-Cu at lower concentrations and are ready for a sustained maximum-intensity protocol. Clinical studies show GHK-Cu often outperforms retinoids in tolerability, making this formulation a strong option even for patients whose skin doesn’t tolerate tretinoin.
HOW TO USE
STEP 01
Apply a thin layer to completely clean, dry skin. At 4%, a thin, even layer is both sufficient and important — a heavier application does not improve results and increases the risk of surface irritation.
STEP 02
Begin with once daily, particularly if stepping up from a lower concentration. Once your skin has calibrated — typically within 1–2 weeks — build to twice daily: once in the morning and once at night. Twice-daily use at 4% is what maintains the continuous regenerative signal this concentration is designed to sustain.
STEP 03
Avoid combining GHK-Cu in the same application session with strong vitamin C, retinol, or alpha hydroxy acids — these can interact with copper peptides and reduce their effectiveness or cause irritation. If you are using Luminant All-In-One Face Cream, apply GHK-Cu in the morning and Luminant at night.
STEP 04
Daily SPF 30 or higher protects the collagen being actively produced. At twice-daily use, the morning application is immediately followed by SPF — this step is non-negotiable.
If stepping up from 2%: give your skin 1–2 weeks at once-daily 4% before building to twice daily. Some patients notice a more active surface renewal period in the first week — this is expected at this concentration and resolves.
4% — the upper bound of the clinically supported optimal range for daily topical GHK-Cu use
Twice-daily protocol sustains the full regenerative signal continuously — morning and evening application maintains receptor saturation throughout the day
Up to 35% improvement in facial wrinkles and 70% increase in skin elasticity documented over 12 weeks in controlled studies, at concentrations in the 2–4% range
GHK-Cu often outperforms retinoids in tolerability — a strong option for patients whose skin doesn’t tolerate tretinoin
How HerTeleMeds Works
Answer a few questions about your skin and medical history.
A U.S.-licensed provider reviews your information within 24 hours.
If prescribed, your compounded formula is made fresh and arrives discreetly — often within 2–3 days.
One application a day. Results build gradually with consistent use.
Product details
FAQ
The 2–4% range represents the optimal balance between effectiveness and tolerability for daily topical GHK-Cu use. At 2%, fibroblast receptor saturation is achieved and the full signaling cascade is engaged. At 4%, that saturation is maintained across a twice-daily protocol, sustaining the regenerative environment continuously. The clinical difference is not a step-change in mechanism — it’s the sustained intensity of the signal over time, particularly suited to patients who want to maintain full receptor engagement morning and evening.
With GHK-Cu, concentration above the optimal range produces diminishing returns. The 2–4% range is where the clinical evidence base sits. Concentrations above 4% do not appear to produce additional benefit and increase the risk of surface irritation. 4% is the upper bound of the range for good reason — it is the highest concentration at which the evidence supports daily use without exceeding what the biology can utilize.
GHK-Cu has a relatively short half-life in tissue. Twice-daily application at 4% is designed to maintain a continuous regenerative signal throughout the day — the morning application engages the signaling cascade during the day's activity, and the evening application sustains it through the skin's overnight repair cycle. For lower concentrations used once daily, the signal is engaged and then fades. At 4% twice daily, the regenerative environment is maintained consistently.
Patients who have already confirmed their tolerance to GHK-Cu — ideally by using the 0.5% or 2% formulation first — and who are committed to a sustained twice-daily protocol for long-term regeneration. The 4% is best suited for patients with more significant aging concerns, those pursuing a dedicated longevity skincare protocol, or those whose clinician has assessed their skin as ready for maximum-intensity daily use.
Clinical studies show GHK-Cu enhances dermal thickness and elasticity, often outperforming retinoids in tolerability. GHK-Cu does not cause the retinization period, photosensitivity, or purging that tretinoin can produce. For patients whose skin is too reactive for tretinoin-based formulations, Regenerative Repair Cream 4% is a clinically meaningful alternative that delivers structural skin improvement through a different and generally better-tolerated mechanism.
OTC products frequently market 5% or 10% copper peptide concentrations — but concentrations above 4% do not appear to increase efficacy and may increase irritation risk. Standard cream bases also deliver less than 5% of applied GHK-Cu to viable epidermis regardless of the label concentration. Regenerative Repair Cream 4% is compounded at a verified therapeutic concentration by a pharmacy with over 35 years of specialized experience, using a formulation designed for actual dermal delivery and prescribed by a clinician reviewing your full health context.
First results in skin hydration and texture typically appear within the first 1–2 weeks. Fine line and firmness improvements are usually visible by weeks 4–8. Structural collagen remodeling deepens through weeks 8–10 and continues with sustained use. The advantage of the 4% twice-daily protocol is that the regenerative signal is maintained continuously — results compound over months and years of consistent use in a way that less frequent protocols cannot replicate.
To date, no existing research has discovered any serious safety concerns with the use of topical GHK-Cu copper peptides. The 2–4% range is specifically identified in the research as appropriate for daily use protocols. Your HerTeleMeds clinician will review your response at each refill and advise on maintaining, adjusting, or cycling your concentration as appropriate.
Regenerative Repair Cream at 4% is for patients who are serious about long-term skin regeneration — who want a twice-daily protocol at the upper bound of the clinically supported concentration range and are committed to the sustained results that produces. Start your consultation today and let a HerTeleMeds clinician confirm whether this is the right protocol for where your skin is.
Start your copper peptide regimenShips in 2–3 days. Prescription included with your visit. Cancel anytime.
