---
title: Official Product Page — Medik8 Liquid Peptides
entity_type: Source
canonical_url: https://skinknowledgebase.com/sources/official-product-page-medik8-liquid-peptides
date_modified: 2026-05-18
date_reviewed: 2026-05-18
mcp_eligible: true
source_type: official_product_page
original_source_url: https://us.medik8.com/products/liquid-peptides
evidence_sources: []
product_fact_sources: []
---

# Official Product Page — Medik8 Liquid Peptides

## Quick Summary

Official Medik8 US product page for Liquid Peptides. Used here as the canonical product-facts source for brand positioning, price context, peptide ingredient callouts, and the published INCI.

## What Studied

Official brand product page, not independent efficacy evidence. It presents Medik8's positioning, ingredient highlights, and consumer-facing copy.

## Main Findings

The page positions the serum as a Liquid Peptides 30% Complex Multi-Peptide Age Defying Serum featuring copper peptides. The published INCI lists peptide ingredients including Palmitoyl Tripeptide-5, Acetyl Hexapeptide-8, Tetrapeptide-21, Pentapeptide-18, Palmitoyl Tripeptide-1, Palmitoyl Tripeptide-38, Palmitoyl Tetrapeptide-7, Copper Palmitoyl Heptapeptide-14, and Heptapeptide-15 Palmitate, alongside humectants Sodium Hyaluronate, Glycerin, Butylene Glycol, and Panthenol, plus Carnosine and Dunaliella Salina Extract.

## Why It Matters

It anchors the Product entity's verified ingredients, brand positioning, and price context. Cosmetic-appearance language on the Question and Product pages is drawn from this source; no medical or efficacy claims are adopted from brand copy.

## Related Entities

- [Medik8 Liquid Peptides](https://skinknowledgebase.com/products/medik8-liquid-peptides)
- [Is Medik8 Liquid Peptides any good?](https://skinknowledgebase.com/questions/is-medik8-liquid-peptides-any-good)