---
title: Medik8 Liquid Peptides
entity_type: Product
canonical_url: https://skinknowledgebase.com/products/medik8-liquid-peptides
date_modified: 2026-05-18
date_reviewed: 2026-05-18
mcp_eligible: true
main_concern:
  title: Wrinkles
  url: https://skinknowledgebase.com/concerns/wrinkles
key_ingredients:
  - title: Matrixyl
    url: https://skinknowledgebase.com/ingredients/matrixyl
  - title: Hyaluronic Acid
    url: https://skinknowledgebase.com/ingredients/hyaluronic-acid
  - title: Glycerin
    url: https://skinknowledgebase.com/ingredients/glycerin
cost: {"currency":"USD","checked_at":"2026-05-18","single_unit":112,"multi_pack_2":0}
retail_url: https://us.medik8.com/products/liquid-peptides
evidence_sources:
  - title: American Academy of Dermatology — Wrinkle treatments overview
    canonical_citation_url: https://skinknowledgebase.com/sources/aad-wrinkles
    original_source_url: https://www.aad.org/public/cosmetic/wrinkles
    source_type: medical_reference
  - title: Schagen SK, "Topical peptide treatments with effective anti-aging results" (Cosmetics, 2017)
    canonical_citation_url: https://skinknowledgebase.com/sources/schagen-2017-peptide-review
    original_source_url: https://www.mdpi.com/2079-9284/4/2/16
    source_type: other
product_fact_sources:
  - title: Official Product Page — Medik8 Liquid Peptides
    canonical_citation_url: https://skinknowledgebase.com/sources/official-product-page-medik8-liquid-peptides
    original_source_url: https://us.medik8.com/products/liquid-peptides
    source_type: official_product_page
---

# Medik8 Liquid Peptides

## Quick Summary

Medik8 Liquid Peptides is a multi-peptide serum positioned around hydration, fine-line appearance, and copper-peptide ingredient callouts. The Medik8 US product page showed $67 during QA, and displayed pricing may vary by region or offer.

## Compact Product Facts

- Brand: Medik8
- Product line: Medik8
- Full product name: Medik8 Liquid Peptides
- Cost: {"currency":"USD","checked_at":"2026-05-18","single_unit":112,"multi_pack_2":0}
- Retail URL: https://us.medik8.com/products/liquid-peptides

## Factual Description

The Medik8 US product page positions Liquid Peptides as a Liquid Peptides 30% Complex Multi-Peptide Age Defying Serum featuring copper peptides. The brand frames the formula as a targeted daily peptide serum with a 30% peptide complex and key ingredient callouts for Matrixyl 3000, Drone-Targeted Copper Peptide, Expression Line Peptide, Carnosine, and Multi-Weight Hyaluronic Acid.

The published INCI on the brand page lists Water, Glycerin, Butylene Glycol, Inulin, Sodium Hyaluronate, Panthenol, Alpha-Glucan Oligosaccharide, Carnosine, Carbomer, Polysorbate 20, Caprylyl Glycol, Phenoxyethanol, Hydroxypropyl Cyclodextrin, Dunaliella Salina Extract, Ethylhexylglycerin, Citric Acid, Palmitoyl Tripeptide-5, Sodium Benzoate, Acetyl Hexapeptide-8, Tetrapeptide-21, Pentapeptide-18, Palmitoyl Tripeptide-1, Pantolactone, Palmitoyl Tripeptide-38, Palmitoyl Tetrapeptide-7, Glyceryl Caprylate, Lactic Acid/Glycolic Acid Copolymer, Polyvinyl Alcohol, Phenylpropanol, Copper Palmitoyl Heptapeptide-14, Heptapeptide-15 Palmitate, Potassium Sorbate, and Xanthan Gum.

## Related Entities

- [AAD — Wrinkles](https://skinknowledgebase.com/sources/aad-wrinkles)
- [Schagen 2017 — Peptide review](https://skinknowledgebase.com/sources/schagen-2017-peptide-review)
- [Official Product Page — Medik8 Liquid Peptides](https://skinknowledgebase.com/sources/official-product-page-medik8-liquid-peptides)
- [Wrinkles](https://skinknowledgebase.com/concerns/wrinkles)
- [Fine Lines](https://skinknowledgebase.com/concerns/fine-lines)
- [Loss of Firmness](https://skinknowledgebase.com/concerns/loss-of-firmness)
- [Matrixyl](https://skinknowledgebase.com/ingredients/matrixyl)
- [Hyaluronic Acid](https://skinknowledgebase.com/ingredients/hyaluronic-acid)
- [Glycerin](https://skinknowledgebase.com/ingredients/glycerin)
- [Is Medik8 Liquid Peptides any good?](https://skinknowledgebase.com/questions/is-medik8-liquid-peptides-any-good)