{"title":"Medik8 Liquid Peptides","entity_type":"Product","slug":"medik8-liquid-peptides","canonical_url":"https://skinknowledgebase.com/products/medik8-liquid-peptides","dates":{"date_modified":"2026-05-18","date_reviewed":"2026-05-18"},"mcp_eligible":true,"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"}],"related_entities":[{"title":"AAD — Wrinkles","url":"https://skinknowledgebase.com/sources/aad-wrinkles"},{"title":"Schagen 2017 — Peptide review","url":"https://skinknowledgebase.com/sources/schagen-2017-peptide-review"},{"title":"Official Product Page — Medik8 Liquid Peptides","url":"https://skinknowledgebase.com/sources/official-product-page-medik8-liquid-peptides"},{"title":"Wrinkles","url":"https://skinknowledgebase.com/concerns/wrinkles"},{"title":"Fine Lines","url":"https://skinknowledgebase.com/concerns/fine-lines"},{"title":"Loss of Firmness","url":"https://skinknowledgebase.com/concerns/loss-of-firmness"},{"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"},{"title":"Is Medik8 Liquid Peptides any good?","url":"https://skinknowledgebase.com/questions/is-medik8-liquid-peptides-any-good"}],"body_sections":[{"heading":"Quick Summary","paragraphs":["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."]},{"heading":"Compact Product Facts","paragraphs":["- Brand: Medik8\n- Product line: Medik8\n- Full product name: Medik8 Liquid Peptides\n- Cost: {\"currency\":\"USD\",\"checked_at\":\"2026-05-18\",\"single_unit\":112,\"multi_pack_2\":0}\n- Retail URL: https://us.medik8.com/products/liquid-peptides"]},{"heading":"Factual Description","paragraphs":["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."]}],"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"}