--- title: "GHK-Cu vs AHK-Cu: Side-by-Side Comparison (2026)" description: "Compare GHK-Cu vs AHK-Cu — mechanism, half-life, dose range, side effects, and live vendor pricing. GHK-Cu from $34.99. AHK-Cu from $44.99. Side-by-side data" lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.bodyhackguide.co/" }, { "@type": "ListItem", "position": 2, "name": "Compare", "item": "https://www.bodyhackguide.co/compare" }, { "@type": "ListItem", "position": 3, "name": "GHK-Cu vs AHK-Cu" } ] }, { "@context": "https://schema.org", "@type": "WebPage", "name": "GHK-Cu vs AHK-Cu: Side-by-Side Comparison (2026)", "description": "Compare GHK-Cu vs AHK-Cu — mechanism, half-life, dose range, side effects, and live vendor pricing. GHK-Cu from $34.99. AHK-Cu from $44.99. Side-by-side data from BodyHackGuide — we earn a commission on some vendor links.", "url": "https://www.bodyhackguide.co/compare/ghk-cu-vs-ahk-cu", "dateModified": "2026-09-09", "isPartOf": { "@type": "WebSite", "name": "BodyHackGuide", "url": "https://www.bodyhackguide.co" }, "mainEntity": { "@type": "ItemList", "itemListElement": [ { "@type": "ListItem", "position": 1, "item": { "@type": "Product", "name": "GHK-Cu", "description": "GHK-Cu is the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine, a molecule Pickart and Thaler first pulled out of human plasma in 1973. The free peptide (GHK, C14H24N6O4) weighs about 340.4 Da; bind it 1:1 to copper and you get the neutral GHK-Cu complex (C14H22CuN6O4) at roughly…", "url": "https://www.bodyhackguide.co/compound/ghk-cu", "category": "Skin, Hair & Aesthetics", "offers": { "@type": "AggregateOffer", "lowPrice": "34.99", "priceCurrency": "USD", "offerCount": 13 } } }, { "@type": "ListItem", "position": 2, "item": { "@type": "Product", "name": "AHK-Cu", "description": "AHK-Cu (Ala-His-Lys-Copper) is a copper chelating tripeptide related to but distinct from GHK-Cu (Gly-His-Lys-Copper). Where GHK-Cu is the most-studied copper peptide and naturally occurs in human plasma, AHK-Cu is a synthetic structural analog with enhanced copper-chelating affinity. 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BodyHackGuide and BHG Labs share common ownership, and we earn a commission on purchases through our links.", "foundingDate": "2024", "founder": { "@id": "https://www.bodyhackguide.co/about#person" }, "sameAs": [ "https://x.com/bodyhackguide", "https://reddit.com/r/BodyHackGuide", "https://reddit.com/r/BrainHackGuide", "https://reddit.com/r/Biohackingher", "https://discord.gg/Mhq5UdRYBA" ], "knowsAbout": [ "Peptide research", "Nootropic research", "Biohacking", "Compound dosing", "Vendor transparency" ], "publishingPrinciples": "https://www.bodyhackguide.co/editorial-standards", "ethicsPolicy": "https://www.bodyhackguide.co/editorial-standards", "diversityPolicy": "https://www.bodyhackguide.co/editorial-standards" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What's the difference between GHK-Cu and AHK-Cu?", "acceptedAnswer": { "@type": "Answer", "text": "GHK-Cu is a skin, hair & aesthetics that ghk-cu works mostly as a copper shuttle and a signaling peptide. it binds cu(ii) with high affinity (log k around 16.4, close to albumin's 16.2) and can supply or regulate copper…. AHK-Cu is a skin & hair that ahk-cu delivers bioavailable copper ions to follicular and dermal tissues. copper acts as a cofactor for lysyl oxidase (collagen/elastin crosslinking), superoxide dismutase…. The two differ in mechanism, half-life (~30-60 min (plasma; approximate legacy figure, no robust modern human PK study) vs Unknown (topical half-life, follicular retention not well characterized)), and typical dose range." } }, { "@type": "Question", "name": "Which has the longer half-life, GHK-Cu or AHK-Cu?", "acceptedAnswer": { "@type": "Answer", "text": "GHK-Cu has a half-life of ~30-60 min (plasma; approximate legacy figure, no robust modern human PK study). AHK-Cu has a half-life of Unknown (topical half-life, follicular retention not well characterized). Longer half-lives generally mean less frequent dosing but slower on/off kinetics." } }, { "@type": "Question", "name": "Which is cheaper, GHK-Cu or AHK-Cu?", "acceptedAnswer": { "@type": "Answer", "text": "Current lowest live price on BodyHackGuide: GHK-Cu from $34.99, AHK-Cu from $44.99. Prices are pulled from the vendor listings tracked on BHG and change frequently — see the compare tables on each compound page for the current set of offers." } }, { "@type": "Question", "name": "Can you stack GHK-Cu and AHK-Cu?", "acceptedAnswer": { "@type": "Answer", "text": "Stacking depends on mechanism overlap, safety profile, and goals. GHK-Cu and AHK-Cu should only be stacked after reviewing each compound's individual protocol page, side effect profile, and any published interaction data. Use the BodyHackGuide stack builder for a structured review before combining research compounds." } }, { "@type": "Question", "name": "Can you stack GHK-Cu and AHK-Cu?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — common pattern. GHK-Cu for face/skin in the morning, AHK-Cu for scalp in the evening. Use separate serums; mixing in one bottle dilutes both. Total daily copper load stays well within safe range at standard topical concentrations. If you're running both at injectable doses, monitor serum ceruloplasmin to watch for cumulative copper." } }, { "@type": "Question", "name": "Which is better for hair loss, GHK-Cu or AHK-Cu?", "acceptedAnswer": { "@type": "Answer", "text": "AHK-Cu has stronger published hair-follicle data — it specifically activates dermal papilla cells which drive follicle cycling. GHK-Cu helps hair via general anti-inflammatory + collagen-around-follicle effects. For androgenetic alopecia, the canonical research-use stack is: minoxidil + finasteride (or topical dutasteride) + AHK-Cu scalp serum + microneedling." } }, { "@type": "Question", "name": "How long until I see results from GHK-Cu?", "acceptedAnswer": { "@type": "Answer", "text": "Skin texture + tone shift visible at 4-6 weeks of consistent topical use. Deeper effects (collagen density, fine-line reduction) show at 12-16 weeks. Hair-follicle effects from AHK-Cu have a similar timeline — 12-16 weeks. These are slow-build peptides, not overnight changes." } }, { "@type": "Question", "name": "Do I need to microneedle when using GHK-Cu / AHK-Cu?", "acceptedAnswer": { "@type": "Answer", "text": "Highly recommended. Topical application without microneedling has limited stratum corneum penetration — most of the peptide sits on the skin surface. Microneedling with a 0.5-1mm derma roller (face) or 1-1.5mm (scalp) increases absorption 10-20× by creating microchannels. Apply peptide immediately after rolling, while channels are still open." } }, { "@type": "Question", "name": "Are GHK-Cu and AHK-Cu safe long-term?", "acceptedAnswer": { "@type": "Answer", "text": "Topical use has 50+ years of cosmetic safety data for GHK-Cu — no major signals. AHK-Cu is newer (~15 years of cosmetic use) but follows the same copper-peptide safety class. The main long-term watch-out is cumulative copper at high doses or injectable use — monitor serum ceruloplasmin + 24h urinary copper quarterly if running injectables. Topical use at standard concentrations doesn't reach this threshold." } } ] } ] --- [Skip to content](#main-content) ## Research Use Only This site is an **educational resource** for research compounds. We do **not endorse** human consumption of any compound. BodyHackGuide and **BHG Labs share common ownership**; we rank every vendor on the same public methodology, and we earn a commission on purchases through our links. By entering, you confirm you are **21 years of age or older** and agree to our [Terms](/terms) & [Privacy Policy](/privacy). I'm 21+ — Enter SiteLeave site [![BodyHackGuide](/assets/bodyhackguide-logo-DOzZNUyh.webp)BodyHackGuide ](/) [Compare](/compare)[Wiki](/wiki)[Vendors](/vendors)[Deals](/deals)[Stacks](/stack-builder)[Nootropics](/nootropics)[Tools](/tools) Learn Community Search ⌘K [Sign In](/auth?returnTo=%2Fcompare%2Fghk-cu-vs-ahk-cu) 100K+ researchers trust BodyHackGuide — Join [r/BodyHackGuide](https://reddit.com/r/bodyhackguide) 1. [Home](/) 2. [Compare](/compare) 3. GHK-Cu vs AHK-Cu # GHK-Cu vs AHK-Cu Side-by-side comparison of GHK-Cu and AHK-Cu: mechanism, half-life, dose range, safety profile, and live vendor pricing. Updated continuously as new research and listings land. GHK-Cu from $34.99 AHK-Cu from $44.99 ## Live price snapshot ### GHK-Cu Current low $79.99 as of Sep 5, 2026 7-day low $44.99 30-day low $44.99 30-day change — baseline building ### AHK-Cu Current low $64.99 as of Sep 5, 2026 7-day low $44.99 30-day low $44.99 30-day change — baseline building ## GHK-Cu GHK-Cu is the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine, a molecule Pickart and Thaler first pulled out of human plasma in 1973. The free peptide (GHK, C14H24N6O4) weighs about 340.4 Da; bind it 1:1… **Live lowest price:** $34.99 across 13 vendors [Full GHK-Cu profile](/compound/ghk-cu) ## AHK-Cu AHK-Cu (Ala-His-Lys-Copper) is a copper chelating tripeptide related to but distinct from GHK-Cu (Gly-His-Lys-Copper). Where GHK-Cu is the most-studied copper peptide and naturally occurs in human plasma, AHK-Cu is a… **Live lowest price:** $44.99 across 5 vendors [Full AHK-Cu profile](/compound/ahk-cu) ## Side-by-side comparison Attribute GHK-Cu AHK-Cu Category Skin, Hair & Aesthetics Skin & Hair Research Stage Approved/marketed as a topical cosmetic ingredient (Copper tripeptide-1) with supporting small human studies. Injectable use is preclinical/off-label, research-use-only, with no human clinical trials. Preclinical Mechanism of Action GHK-Cu works mostly as a copper shuttle and a signaling peptide. It binds Cu(II) with high affinity (log K around 16.4, close to albumin's 16.2) and can supply or regulate copper for copper-dependent enzymes like SOD1, lysyl oxidase, cytochrome c oxidase, and… AHK-Cu delivers bioavailable copper ions to follicular and dermal tissues. Copper acts as a cofactor for lysyl oxidase (collagen/elastin crosslinking), superoxide dismutase (antioxidant), and vascular endothelial growth factor (VEGF) signaling. The tripeptide… Half-Life ~30-60 min (plasma; approximate legacy figure, no robust modern human PK study) Unknown (topical half-life, follicular retention not well characterized) Typical Dose Range 200-500 mcg SC daily (community/RUO; no clinically established injectable dose) 0 Dosing Frequency Once daily subcutaneous; some run 5 days on / 2 days off. Topical: 1-2x daily to cleansed skin. once\_daily Administration Subcutaneous, Topical Topical, Subcutaneous, Intradermal Side Effects Topical GHK-Cu is generally well tolerated; higher-concentration formulations (4-5%) raise the odds of irritation, redness, or stinging. Injectable use has no safety data from controlled trials; the main theoretical concern is copper accumulation with repeated… — Molecular Weight Free peptide (GHK): 340.38 Da (C14H24N6O4). Copper complex (GHK-Cu): 401.9 Da (C14H22CuN6O4, neutral 1:1 Cu(II) complex). Free peptide (AHK): 354.41 Da (C15H26N6O4). Copper complex (AHK-Cu): 415.9 Da (C15H24CuN6O4, neutral 1:1 Cu(II) complex - Cu(II) displaces two protons from the tripeptide ligand). Common Vial Sizes 50 mg, 100 mg 50, 100 ## Price History 9 data points - OF - BM - Unknown - VANDL Labs - Unknown - LB - Ion Peptide - BHG Labs - Disguised Alpha ## Price History 2 data points - Ion Peptide - Disguised Alpha ### GHK-Cu — potential benefits - Stimulates type I collagen synthesis in human fibroblasts at low nanomolar-to-picomolar concentrations (PMID: 3169264) - Increases glycosaminoglycans (dermatan/chondroitin sulfate) and upregulates decorin in wound models (PMID: 11121126) - Modulates matrix metalloproteinases and their inhibitors, partially correcting the MMP-9/TIMP-1 imbalance in a smoke-induced emphysema model (PMID: 35936787) - Drives tissue remodeling and chemoattracts macrophages, mast cells, and capillary cells to injury sites (PMID: 18644225) - Modulates expression of ~4,000+ human genes via the Broad Institute Connectivity Map, including DNA-repair and antioxidant genes (PMID: 25302294) - Increases stemness and proliferative potential of epidermal basal cells and keratinocytes (PMID: 23019153) - Acts as an antioxidant and anti-inflammatory copper regulator in the context of aging (PMID: 22666519) - Broad skin-regeneration effects on collagen, proteoglycans, MMPs, and immune/endothelial cell recruitment (PMID: 26236730) ### AHK-Cu — potential benefits - Hair follicle stimulation — activates anagen phase via Wnt/β-catenin in dermal papilla cells - Reduction of follicle miniaturization in androgenetic alopecia models - Enhanced scalp vascularity via VEGF upregulation - Wound healing acceleration — copper cofactor for lysyl oxidase and collagen maturation - Synergistic with GHK-Cu in multi-peptide scalp formulations In-depth comparison ## GHK-Cu vs AHK-Cu: the long answer GHK-Cu (glycyl-histidyl-lysyl copper) is the heavyweight — skin + hair + wound healing + anti-aging research spanning 50 years. AHK-Cu (alanyl-histidyl-lysyl copper) is the newer cousin — primarily hair-growth focused with stronger published hair-follicle activation data, weaker on skin/wound. If you want skin or general anti-aging: GHK-Cu. If you want hair specifically: AHK-Cu (or stack them). Last reviewed: May 18, 2026 ### Mechanism — same metal, different peptide signal Both peptides bind copper(II) and deliver it to specific cellular targets. GHK-Cu (glycyl-histidyl-lysyl-Cu) was discovered in 1973 as a plasma factor that drops with age. It modulates ~4,000 human genes — wound healing, collagen synthesis, anti-inflammatory, antioxidant pathways. AHK-Cu (alanyl-histidyl-lysyl-Cu) was developed later, optimized for hair-follicle dermal papilla cells. Same copper carrier, different sequence specificity = different downstream gene activation pattern. - **GHK-Cu:** Glycyl-histidyl-lysyl-Cu. ~4,000 genes modulated. Broad anti-aging. - **AHK-Cu:** Alanyl-histidyl-lysyl-Cu. Narrower target — dermal papilla / hair follicle dermal cells. - **Shared:** Both deliver Cu(II) intracellularly. Copper is the bioactive payload; the peptide is the carrier. ### What each is best for GHK-Cu wins for: skin rejuvenation (collagen + elastin synthesis), wound healing (post-surgical scar reduction, photo-aging reversal), broader anti-aging (gene-expression normalization toward younger profile), oral mucositis (cancer-treatment adjunct). AHK-Cu wins for: hair-follicle-specific protocols — dermal papilla activation, follicle miniaturization reversal in androgenetic alopecia. The stack (GHK-Cu + AHK-Cu together) is the canonical cosmetic-peptide combination for users targeting both skin AND hair. - **GHK-Cu wins on:** Skin (collagen + elastin), wound healing, broad anti-aging, post-laser recovery - **AHK-Cu wins on:** Hair growth (dermal papilla activation), androgenetic alopecia adjunct, scalp protocols - **Stack for both:** Most cosmetic peptide protocols use both — GHK-Cu morning topical, AHK-Cu scalp-specific microneedling adjunct ### Delivery routes — topical vs subQ vs scalp Topical (cream/serum) is most common for skin protocols — GHK-Cu at 0.05-0.2% in moisturizer base, applied AM + PM. Microneedling-assisted delivery (0.5-1mm derma roller before application) bumps absorption 10-20×. SubQ injection at 1-3mg/dose 2-3×/week for systemic anti-aging effects (longer protocols only). For hair, AHK-Cu in serum form, scalp application + microneedling combo is standard. SubQ delivery isn't validated for AHK-Cu specifically. - **GHK-Cu topical:** 0.05-0.2% in cream/serum, AM + PM. Microneedling 10-20× absorption boost. - **GHK-Cu subQ:** 1-3mg, 2-3×/week, systemic anti-aging - **AHK-Cu scalp:** Serum + microneedling. SubQ not validated for hair-specific protocols. ### Safety — well-tolerated, watch for copper accumulation Both peptides have excellent topical safety profiles — 50+ years of GHK-Cu cosmetic use globally. Side effects are limited to mild local irritation in <5% of users (typically users with sensitive skin). The one watch-out: cumulative copper. Both peptides deliver copper. Long-term high-dose users (>6 months at upper doses, especially injectable) should monitor serum ceruloplasmin + 24h urinary copper. Wilson's disease patients should avoid copper-delivering peptides entirely. - **Topical side effects:** <5% mild local irritation. Otherwise clean. - **Cumulative copper watch:** Long-term high-dose users monitor serum ceruloplasmin + 24h urinary copper - **Contraindication:** Wilson's disease — copper accumulation disorder. Avoid all copper peptides. ### Cost — affordable cosmetic protocol Research-use GHK-Cu ~$30-60/50mg vial. At topical 0.1% formulation in a 30ml serum base, one vial makes ~600 daily doses → $0.05-0.10 per application. AHK-Cu more expensive: ~$60-120/50mg vial → ~$0.10-0.20 per application. Stack runs ~$0.15-0.30/day. Vs commercial cosmetic copper peptide serums at $80-200/30ml bottle (4-8 weeks of use), DIY is 10-30× cheaper. - **GHK-Cu cost:** $30-60/50mg vial → ~$0.05-0.10/topical application - **AHK-Cu cost:** $60-120/50mg vial → ~$0.10-0.20/application - **DIY vs commercial:** 10-30× cheaper than $80-200 cosmetic serums. Same molecule, less retail markup. ### Who chooses which Skin focus (anti-aging, photo-damage, post-procedure recovery): GHK-Cu. Hair focus (androgenetic alopecia, dermal-papilla support, post-finasteride syndrome scalp recovery): AHK-Cu. Both (most users): the stack. Topical for face + scalp. Optional subQ at 2mg 2×/week for systemic anti-aging if you want the gene-expression-shift effect beyond skin layer. - **Skin only:** GHK-Cu. Topical 0.1% + microneedling. - **Hair only:** AHK-Cu. Scalp serum + microneedling. - **Both:** Stack. GHK morning face, AHK evening scalp. Optional GHK subQ 2mg 2×/week for systemic effect. ## Frequently asked ### What's the difference between GHK-Cu and AHK-Cu? GHK-Cu is a skin, hair & aesthetics that ghk-cu works mostly as a copper shuttle and a signaling peptide. it binds cu(ii) with high affinity (log k around 16.4, close to albumin's 16.2) and can supply or regulate copper…. AHK-Cu is a skin & hair that ahk-cu delivers bioavailable copper ions to follicular and dermal tissues. copper acts as a cofactor for lysyl oxidase (collagen/elastin crosslinking), superoxide dismutase…. The two differ in mechanism, half-life (~30-60 min (plasma; approximate legacy figure, no robust modern human PK study) vs Unknown (topical half-life, follicular retention not well characterized)), and typical dose range. ### Which has the longer half-life, GHK-Cu or AHK-Cu? GHK-Cu has a half-life of ~30-60 min (plasma; approximate legacy figure, no robust modern human PK study). AHK-Cu has a half-life of Unknown (topical half-life, follicular retention not well characterized). Longer half-lives generally mean less frequent dosing but slower on/off kinetics. ### Which is cheaper, GHK-Cu or AHK-Cu? Current lowest live price on BodyHackGuide: GHK-Cu from $34.99, AHK-Cu from $44.99. Prices are pulled from the vendor listings tracked on BHG and change frequently — see the compare tables on each compound page for the current set of offers. ### Can you stack GHK-Cu and AHK-Cu? Stacking depends on mechanism overlap, safety profile, and goals. GHK-Cu and AHK-Cu should only be stacked after reviewing each compound's individual protocol page, side effect profile, and any published interaction data. Use the BodyHackGuide stack builder for a structured review before combining research compounds. ### Can you stack GHK-Cu and AHK-Cu? Yes — common pattern. GHK-Cu for face/skin in the morning, AHK-Cu for scalp in the evening. Use separate serums; mixing in one bottle dilutes both. Total daily copper load stays well within safe range at standard topical concentrations. If you're running both at injectable doses, monitor serum ceruloplasmin to watch for cumulative copper. ### Which is better for hair loss, GHK-Cu or AHK-Cu? AHK-Cu has stronger published hair-follicle data — it specifically activates dermal papilla cells which drive follicle cycling. GHK-Cu helps hair via general anti-inflammatory + collagen-around-follicle effects. For androgenetic alopecia, the canonical research-use stack is: minoxidil + finasteride (or topical dutasteride) + AHK-Cu scalp serum + microneedling. ### How long until I see results from GHK-Cu? Skin texture + tone shift visible at 4-6 weeks of consistent topical use. Deeper effects (collagen density, fine-line reduction) show at 12-16 weeks. Hair-follicle effects from AHK-Cu have a similar timeline — 12-16 weeks. These are slow-build peptides, not overnight changes. ### Do I need to microneedle when using GHK-Cu / AHK-Cu? Highly recommended. Topical application without microneedling has limited stratum corneum penetration — most of the peptide sits on the skin surface. Microneedling with a 0.5-1mm derma roller (face) or 1-1.5mm (scalp) increases absorption 10-20× by creating microchannels. Apply peptide immediately after rolling, while channels are still open. ### Are GHK-Cu and AHK-Cu safe long-term? Topical use has 50+ years of cosmetic safety data for GHK-Cu — no major signals. AHK-Cu is newer (~15 years of cosmetic use) but follows the same copper-peptide safety class. The main long-term watch-out is cumulative copper at high doses or injectable use — monitor serum ceruloplasmin + 24h urinary copper quarterly if running injectables. Topical use at standard concentrations doesn't reach this threshold. ## See current vendor prices Live listings from the vendors we track, refreshed continuously. [GHK-Cu prices](/compound/ghk-cu?tab=prices) [AHK-Cu prices](/compound/ahk-cu?tab=prices) [Compare all compounds](/compare) ### Before you buy GHK-Cu or AHK-Cu Check the vendor trust score. Every supplier we track is rated 0–100 on COA verification, payment transparency, shipping, reviews, and listings — one published, reproducible methodology, applied to every vendor including BHG Labs, which shares our ownership. 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