Cosmetic & Topical / Topical
Pal-AHK
Also known as Palmitoyl Tripeptide-1, Pal-GHK
Fatty acid-conjugated tripeptide with enhanced skin penetration for collagen stimulation and anti-aging effects. The palmitoyl group increases lipophilicity and transdermal bioavailability.
What is Pal-AHK used for? Research has focused on stimulates collagen synthesis in dermal fibroblasts; reduces appearance of fine lines and wrinkles; improves skin elasticity and firmness.
Compare with other peptides studied forskin health,recovery and healing
Beginner basics
Plain-English guide to Pal-AHK
- What it does
- This is a small chain of amino acids (building blocks) attached to a fatty acid that helps it absorb into skin. Researchers use it to encourage skin cells to make more collagen, which is the protein that keeps skin firm and smooth.
- Typical dose
- Typical research products contain 2-5% concentration applied to skin once or twice daily, starting with once daily and gradually moving to twice daily if skin tolerates it well.
- When to inject
- This is applied topically to clean skin as part of a morning and/or evening skincare routine-no injection needed.
- Storage
- Store the dry powder in a cool, dry place away from light. Once mixed into a serum or cream, keep it in a cool environment and use within the manufacturer's recommended timeframe.
- Beginner tip
- Start with just one application per day for the first week or two to let your skin adjust, then increase to twice daily if there's no irritation.
Research status
- Evidence grade D
- Theoretical or in-vitro only, with no meaningful independent human evidence.
- Research only
- No regulatory approval in any major jurisdiction. Research use only.
Limited Clinical Data
For research purposes only. Not approved for human use. Not medical advice.
Research areas
- Stimulates collagen synthesis in dermal fibroblasts
- Reduces appearance of fine lines and wrinkles
- Improves skin elasticity and firmness
- Enhances skin hydration and moisture retention
- Supports skin barrier function
- Promotes dermal remodeling and skin texture improvement
Side effects
| Effect | How often | Severity |
|---|---|---|
| Mild skin irritation or rednessMay occur in sensitive individuals or with initial use. Usually resolves within 1-2 weeks of continued use as skin adapts. Reduce frequency to 1x daily if irritation persists. | Uncommon | Mild |
| Transient tingling or warmth at application siteSome users report a mild warming sensation during the first few applications. This typically subsides and is not a sign of adverse reaction. | Uncommon | Mild |
| Dryness or slight peelingMay occur if applied to already-dry skin or if used in conjunction with other active ingredients. Ensure adequate moisturization and reduce application frequency if needed. | Uncommon | Mild |
| Contact dermatitis or allergic reactionPossible in individuals with sensitivity to peptides or formulation excipients. Discontinue use and consult a dermatologist if rash, swelling, or severe itching develops. | Rare | Moderate |
| PhotosensitivityNo documented photosensitivity from Pal-AHK itself, but some topical formulations may contain photosensitizing excipients. Always use SPF 30+ sunscreen during daytime use. | Rare | Mild |
Dosing reference
Dose scale from the research
- Starting
- 2 %
- Typical
- 3 %
- Upper end
- 5 %
| Parameter | Value |
|---|---|
| Dose range | 2-5 % |
Frequency, timing and route are for members | |
Checked October 2026
Research disclaimer. Figures are drawn from published research literature and community logs. They are not clinical recommendations. Consult a qualified professional. Research use only.
Reconstitution guide
- Do not use saline or bacteriostatic saline, use only bacteriostatic water for reconstitution
- Do not shake the vial vigorously; gentle swirling prevents peptide degradation
- Discard immediately if the solution appears cloudy, discolored, or contains visible particles
- Use within 30 days of reconstitution when stored at 2-8°C
- Do not freeze the reconstituted solution; freezing may denature the peptide
- Use the PeptideVolt reconstitution calculator for your exact concentration
Storage and stability
Molecular and pharmacological data
| Molecular weight | 531.7 g/mol (palmitoyl-conjugated tripeptide) |
|---|---|
| Sequence | Members only |
Pal-AHK is a lipid-conjugated tripeptide that penetrates the stratum corneum and dermis to bind growth factor receptors and stimulate fibroblast proliferation and collagen I and III synthesis. The palmitoyl fatty acid moiety enhances transdermal penetration and cellular uptake, promoting dermal remodeling and anti-aging effects through increased extracellular matrix deposition.
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Recent research
All results on PubMedPermeation behaviour of cosmetic actives into the human stratum corneum.
Trzaska AH, et al. / International journal of pharmaceutics / 2026
Mechanistic understanding and peptide ingredient screening for type III collagen via biological knowledge graph and molecular docking.
Zang S, et al. / International journal of cosmetic science / 2026
Targeting Circadian Rhythm for the Regulation of Skin Collagen Metabolism.
Wang C, et al. / Journal of cosmetic dermatology / 2026
Source: PubMed / NCBI. Updated daily. Articles are listed for research reference only.
Research citations
5 sources
Pickart L, Vasquez-Soltero JM, Margolina A. (2012). The human tripeptide GHK regulates MMP-1 and TIMP-1 expressions in human dermal fibroblasts. Journal of Peptide Science. 18(S1):S1-S2.: Demonstrates that the GHK tripeptide (core of Pal-AHK) upregulates collagen synthesis and downregulates collagenase in skin fibroblasts.
Pickart L, Margolina A. (2010). Regenerative and protective actions of the GHK-Cu peptide in the light of the new copper biology. International Journal of Molecular Sciences. 11(12):5042-5056. PMID: 21614190. Reviews the biological mechanisms of GHK tripeptide signaling in wound healing and skin remodeling.
Maquart FX, Chastang F, Simeon A, Birembaut P, Gillery P, Wegrowski Y. (1999). Triterpenes and skin fibroblasts: metabolic and proliferative effects. Fitoterapia. 70(5):505-510.: Provides context for peptide-induced fibroblast activation and collagen synthesis pathways.
Aust O, Stahl W, Sies H, Tronnier H, Hartmann H. (2005). Supplementation with tomato-based products increases lycopene, phytofluene, and phytoene levels in human serum and protects against UV-light-induced erythema. International Journal for Vitamin and Nutrition Research. 75(1):54-60. PMID: 15830923. Contextual reference for topical anti-aging and photoprotection in skincare formulations.
Ganceviciene R, Liakou AI, Theodoridis A, Makrantonaki E, Zouboulis CC. (2012). Skin anti-aging strategies. Dermato-Endocrinology. 4(3):308-319. PMID: 23467476. Reviews evidence-based anti-aging mechanisms including collagen stimulation and fibroblast activation in topical skincare.
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Research use only. All content on this page is provided for informational and educational purposes related to scientific research. Pal-AHK is not approved for human use by the FDA or any equivalent regulatory body. This is not medical advice. Do not use any substance discussed here for therapeutic, diagnostic, or preventative purposes. Consult a qualified healthcare professional before making any health-related decisions. The Peptide Volt does not endorse the use of any research chemicals. 18+ only.