Your body already knows this peptide. We concentrated it.
GHK-Cu is a copper peptide found naturally in human plasma. Your body produces it throughout your life, but levels decline with age. CKYN replenishes it topically, at concentrations designed to contribute to visible change in the appearance of skin firmness, smoothness, and quality.
Each formula pairs GHK-Cu with a single complementary bioactive selected for a specific job: manuka honey for barrier hydration, grass-fed tallow for deep nourishment, methylene blue for overnight antioxidant support. Every ingredient earns its place.
The result is a system where fewer ingredients means higher concentration per milliliter, and higher concentration means the difference shows up in the mirror.
Three formulas. Three jobs. Zero filler.
Morning protection. Daytime barrier support. Overnight visible firming. Each product built around GHK-Cu copper peptide at concentrations that actually work.
Meticulously chosen bioactives.
Other brands pad their labels with 30 ingredients. Not us. Every ingredient in CKYN earns its place, backed by published research, dosed at concentrations that produce visible change, and formulated to amplify each other.
Morning prepares. Daytime defends. Nighttime renews.
Each product amplifies the next. The protocol creates compound results that no single product, at any price, can match.
GHK-Cu Perfecting Lotion
Dispense 4-5 pumps onto fingertips, then gently pat and massage into a cleansed face and neck.
GHK-Cu Tallow Balm
Warm a generous amount between fingertips. Massage onto face and neck in gentle, circular motions until evenly absorbed.
GHK-Cu Firming Serum
After cleansing, apply generously to face and neck. Gently massage until smooth and evenly absorbed as your final step before sleep.
What changes at each stage.
Skin responds to consistent peptide application in a predictable pattern. Here is what the first 90 days look like.
Weeks 1-2: Hydration and Texture
Skin feels different immediately. Deeper hydration, less tightness, dry patches begin to visibly diminish. GHK-Cu establishes a foundation of nourishment your skin has been missing.
Week 4-6: Texture Shift
This is when people start asking what you changed. Fine lines soften visibly. Skin tone appears more even. The texture around your forehead and jawline smooths in a way you can feel.
Week 8-12: Visible Firmness
The cumulative effect of 90 days of consistent peptide application. Skin is visibly firmer, more radiant, with a quality that looks rested and healthy.
Individual results vary. These descriptions reflect general expectations based on consistent use of the full CKYN protocol. CKYN products are cosmetic formulations designed to support the appearance of skin quality. They are not intended to diagnose, treat, cure, or prevent any disease.
Your body produced more of this peptide when you were younger.
GHK-Cu is a copper tripeptide found naturally in human plasma. Levels peak in your 20s and decline steadily from there. Published research associates it with visibly firmer, smoother, more youthful-looking skin. CKYN reintroduces it topically, at the concentrations that produce visible results.
What GHK-Cu Does
First identified in human plasma in 1973 by Dr. Loren Pickart, GHK-Cu is a tripeptide-copper complex your body produces naturally. Published studies associate it with visible improvements in the appearance of skin firmness, a more elastic-looking complexion, and overall complexion quality.
Over four decades of published research have made GHK-Cu one of the most studied compounds in cosmetic peptide science. It is the foundational active in every CKYN formula because the evidence base is deeper than any trending ingredient on the market.
Your Skin Runs on Science.
GHK-Cu is one of the most studied peptides in cosmetic science. Key findings from peer-reviewed research.
All figures from published, peer-reviewed cosmetic science research. Individual results vary. These statements refer to the ingredient GHK-Cu as studied in published literature and are not claims about CKYN products specifically.
What goes into every bottle. And what stays out.
40+ Years of Research
GHK-Cu has been studied in peer-reviewed cosmetic science since 1973. This is not a trending ingredient.
Intentional Ingredients
No filler ingredients, no added fragrance, no label padding. Every ingredient earns its place, backed by published research.
Cruelty-Free
No animal testing at any stage of development or production.
Made in the USA
Formulated and manufactured domestically.
Clinical-Grade Concentrations
GHK-Cu at levels designed to produce visible change. Not trace amounts added for label claims.
Biocompatible by Design
Grass-fed tallow mirrors your skin's own lipid structure. GHK-Cu is a peptide your body already recognizes.
Before you decide.
When will I see results?
Most people notice a hydration and texture difference within the first two weeks. Visible improvements in firmness and fine lines typically become apparent between weeks four and eight with consistent use. The full protocol accelerates this timeline compared to using a single product.
Why do you use fewer ingredients than most skincare brands?
Concentration matters more than ingredient count. Most skincare brands dilute across 20-30 ingredients to build a longer label. We formulate around GHK-Cu at meaningful concentrations, then select a small number of complementary bioactive ingredients chosen because they amplify each other and earn their place through published research. Nothing is there for marketing.
Do I need all three products?
Each product works on its own. The protocol works better. The Morning GHK-Cu Perfecting Lotion handles hydration and protection. The Daytime GHK-Cu Tallow Balm addresses barrier nourishment whenever skin feels dry or stressed. The Night-Time GHK-Cu Firming Serum supports overnight renewal and visible firming. Together they cover every phase of your skin's daily cycle, delivering GHK-Cu and our complementary bioactive ingredients three times a day. Your skin absorbs what it can in each application. Three doses compounds what a single product cannot.
Is this for men and women?
Yes. Skin biology works the same way regardless of gender. There are no gendered fragrance profiles or unnecessary additives. The formulations are designed to visibly improve the appearance of firmness, barrier health, and hydration. Those goals are universal.
What is GHK-Cu?
GHK-Cu is a copper peptide that naturally occurs in human plasma. Your body produces it on its own, but levels decline with age. In cosmetic science, it is one of the most studied peptides for visibly firmer, smoother, more youthful-looking skin. It is the foundation of every CKYN formula.
How does this compare to retinol or vitamin C?
Retinol and vitamin C are effective but come with trade-offs: irritation, sun sensitivity, oxidation. GHK-Cu works differently. It is naturally biocompatible, does not cause photosensitivity, and supports a visibly improved complexion without the adjustment period most actives require. Published studies show GHK-Cu outperformed both retinol and vitamin C comparators in visible skin firmness trials.
Why is the tallow balm $144?
The grass-fed tallow is sourced from pasture-raised cattle and rendered specifically for cosmetic use. Combined with clinical-grade GHK-Cu at effective concentrations, the cost reflects what goes into the jar. A small amount goes a long way. Most people use one jar over 6-8 weeks.