Ghk Copper Peptide Serum
What it's good for
Key actives from our research database. Click any to read the full evidence dossier.
A fruit-derived AHA that exfoliates and antioxidizes. It shares the same basic mechanism as glycolic and lactic acid but is weaker gram-for-gram; in practice you'll see it doing dual duty (a little exfoliation plus pH stabilisation) in multi-acid toners and serums. When it appears low on an ingredient list, it's adjusting pH; higher up, it's contributing real exfoliation.
Good for: Exfoliating, Antioxidant
A signal peptide that tells your skin to make more collagen and elastin. Quiet but consistent firmness support over months of daily use.
Good for: Anti-aging
A workhorse hydrator that pulls water into your skin. In nearly every good moisturizer for a reason.
Good for: Hydrating
A pure hydrator that holds water in your skin. Makes skin look plumper and smoother almost immediately.
Good for: Hydrating
The mildest exfoliating acid. Refines texture and hydrates at the same time, and it's sensitive-skin friendly.
Good for: Exfoliating, Hydrating
Evidence behind the ingredients
Real citations from our research database, one per tracked active in this product. Click any ingredient name to read its full evidence dossier.
A fruit-derived AHA that exfoliates and antioxidizes. It shares the same basic mechanism as glycolic and lactic acid but is weaker gram-for-gram; in practice you'll see it doing dual duty (a little exfoliation plus pH stabilisation) in multi-acid toners and serums. When it appears low on an ingredient list, it's adjusting pH; higher up, it's contributing real exfoliation.
Tang SC, Yang JH. Dual Effects of Alpha-Hydroxy Acids on the Skin. Molecules. 2018;23(4):863.
Yamamoto Y, Uede K, Yonei N, Kishioka A, Ohtani T, Furukawa F. Effects of alpha-hydroxy acids on the human skin of Japanese subjects: the rationale for chemical peeling. Journal of Dermatology. 2006 Jan;33(1):16-22. — Clinical-mechanistic study in Japanese subjects demonstrating AHA (including citric acid class) keratolytic and epidermal renewal effects as rationale for chemical peeling.
Bernstein EF, Underhill CB, Lakkakorpi J, et al. Citric acid increases viable epidermal thickness and glycosaminoglycan content of sun-damaged skin. Dermatologic Surgery. 1997 Aug;23(8):689-694. — Mechanistic study showing topical citric acid increased viable epidermal thickness and dermal glycosaminoglycans in sun-damaged skin, similar to glycolic acid and retinoic acid.
A signal peptide that tells your skin to make more collagen and elastin. Quiet but consistent firmness support over months of daily use.
Patel MN et al., An Assessment of the Safety, Efficacy, and Tolerability of a Novel Scalp Treatment Regimen Combining a Hydroxy Acid-Based Scrub and Copper Tripeptide Serum in the Management of Seborrheic Dermatitis in Adults, Cureus 2024;16(9):e70108 — 15-day interventional study: copper tripeptide regimen reduced flaking, improved hydration in seborrheic dermatitis
Jiang F et al., Synergy of GHK-Cu and hyaluronic acid on collagen IV upregulation via fibroblast and ex-vivo skin tests, Journal of Cosmetic Dermatology 2023;22(9):2598-2604 — in vitro + ex vivo: GHK-Cu + HA promoted collagen I, IV, and VII; 25.4-fold collagen IV increase in fibroblasts
Dou Y et al., The potential of GHK as an anti-aging peptide, Aging Pathobiology and Therapeutics 2020;2(1):58-61 — narrative review of GHK-Cu's anti-inflammatory and tissue-remodeling mechanisms
A workhorse hydrator that pulls water into your skin. In nearly every good moisturizer for a reason.
Danby SG et al., Different types of emollient cream exhibit diverse physiological effects on the skin barrier in adults with atopic dermatitis, Clinical and Experimental Dermatology 2022;47(6):1154-1164 — glycerol+urea emollient delivered superior barrier-strengthening and irritant protection
Youssef R et al., Glycerol 85% efficacy on atopic skin and its microbiome: a randomized controlled trial, Journal of Dermatological Treatment 2021;32(7):730-736 — topical glycerol 85% RCT on atopic skin
Evans NJ et al., Human axillary skin condition is improved following incorporation of glycerol into the stratum corneum from an antiperspirant formulation, Archives of Dermatological Research 2017;309(9):739-748 — 4% glycerol penetrated axillary SC, reduced irritation, improved hydration
+−2 more ingredients
A pure hydrator that holds water in your skin. Makes skin look plumper and smoother almost immediately.
Karabat MU, Tuncer MC. Effects of hyaluronic acid on skin at the cellular level: a systematic review. Rev Assoc Med Bras. 2025;71(8):e20250208. — Systematic review of 45 studies found low-molecular-weight HA stimulates keratinocyte proliferation and migration while high-molecular-weight HA drives skin hydration, supporting topical HA as an effective skin-hydrating and barrier-supporting ingredient.
Bravo B et al., Benefits of topical hyaluronic acid for skin quality and signs of skin aging: From literature review to clinical evidence, Dermatology and Therapy 2022;12(12):2657-2680 — HA-based cosmeceuticals reliably improve hydration and signs of skin aging
Lee SG et al., Hyaluronan Oligosaccharides Improve Rosacea-Like Phenotype through Anti-Inflammatory and Epidermal Barrier-Improving Effects, Annals of Dermatology 2020
The mildest exfoliating acid. Refines texture and hydrates at the same time, and it's sensitive-skin friendly.
Peng Y et al., Comparison of Efficacy and Willingness to a 5% Gluconolactone-Based Topical Serum and Intense Pulsed Light in Mild Erythema of Rosacea: A Paired Control Study, Journal of Cosmetic Dermatology 2025;24(3):e70025 — 5% gluconolactone serum improved erythema and moisturization over 30 days
Kantikosum K et al., The efficacy of glycolic acid, salicylic acid, gluconolactone, and licochalcone A combined with 0.1% adapalene vs adapalene monotherapy in mild-to-moderate acne vulgaris, Clinical Cosmetic and Investigational Dermatology 2019;12:151-161 — gluconolactone cosmeceutical added benefit on top of adapalene without hindering treatment
Edison BL et al., A polyhydroxy acid skin care regimen provides antiaging effects comparable to an alpha-hydroxyacid regimen, Cutis 2004;73(2 Suppl):14-17 — 12-week PHA regimen matched AHA antiaging benefits with significantly less stinging/burning
Sources: 10 clinical journals and regulatory databases across the US, EU, Korea, Japan, and China. Every entry points to a specific document. See methodology for the full list and what each outcome label means.
Similar comparisons
Not medical advice. GlowPal is educational. Patch-test new products and talk to a qualified healthcare professional before changing your routine, especially if you're pregnant, nursing, or have a diagnosed skin condition. See our terms.