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Our team selected this for clients who approach skin health with the same rigour they bring to nutrition or recovery — looking for a well-formulated, evidence-informed product rather than a single hero ingredient. The breadth of the peptide blend, combined with Medik8's Dual MiniProteins™ technology, makes this one of the more considered options in the category. It suits those who have the fundamentals of their skincare routine in place and want to add a targeted peptide layer with a credible formulation behind it.
About this product
Medik8 Liquid Peptides Advanced MP
Medik8 Liquid Peptides Advanced MP is a precision serum built around a broad-spectrum blend of 13 peptides, anchored by Dual MiniProteins™ — a technology developed by Medik8's Chief Product Officer Daniel Isaacs and described by the brand as a world first. Peptides are short chains of amino acids thought to encourage the skin's production of collagen, elastin, and hyaluronic acid, supporting visible improvements in bounce and resilience with consistent use.
The peptide roster includes Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-38, Acetyl Hexapeptide-8, and Pentapeptide-18, among others — a multi-pathway approach to targeting visible signs of ageing rather than relying on a single active. Each peptide class is thought to act via a distinct mechanism, which is the rationale behind formulating with a broad spectrum rather than a concentrated single ingredient.
The formula is rounded out with humectants — glycerin and pantolactone — to help draw water to the upper layers of the skin, alongside sodium hyaluronate for moisture retention. Dunaliella Salina (green algae) extract and panthenol contribute to the overall skin-conditioning profile. The texture is serum-weight and layers cleanly within an existing routine, making it a practical addition rather than a disruptive step. As with all peptide serums, results build gradually; this is a product that rewards consistent, daily use over weeks rather than days.
What it does
Benefits
- 01
Contains 13 peptides including Dual MiniProteins™, targeting visible wrinkle reduction from multiple pathways
- 02
Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, and Palmitoyl Tripeptide-38 among the actives supporting visible skin firmness
- 03
Glycerin and pantolactone act as humectants to help attract water to the upper layers of the skin
- 04
Sodium hyaluronate supports moisture retention within the formula
- 05
Dunaliella Salina (green algae) extract and panthenol contribute to the skin-conditioning profile
- 06
Lightweight serum texture designed to layer cleanly within an existing skincare routine
Get the most from it
How to use
Aqua (Water), Glycerin, Butylene Glycol, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1, Copper Heptapeptide-14 Pantothenate, Heptapeptide-15 Palmitate, Arginine/Lysine Polypeptide, Palmitoyl Tripeptide-38, Carnosine, Acetyl Hexapeptide-8, Pentapeptide-18, Palmitoyl Tripeptide-5, Tetrapeptide-21, Sodium Hyaluronate, Inulin, Alpha-Glucan Oligosaccharide, Lactic Acid/Glycolic Acid Copolymer, Panthenol, Ethylhexylglycerin, Hydroxypropyl Cyclodextrin, Dunaliella Salina (Green Algae) Extract, Polysorbate 20, Caprylyl Glycol, Citric Acid, Glyceryl Caprylate, Pantolactone, Phenylpropanol, Polyvinyl Alcohol, Carbomer, Potassium Sorbate, Sodium Benzoate, Sorbic Acid, Phenoxyethanol, Xanthan Gum
What's inside
Ingredients
View full ingredient list
Aqua (Water), Glycerin, Butylene Glycol, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1, Copper Heptapeptide-14 Pantothenate, Heptapeptide-15 Palmitate, Arginine/Lysine Polypeptide, Palmitoyl Tripeptide-38, Carnosine, Acetyl Hexapeptide-8, Pentapeptide-18, Palmitoyl Tripeptide-5, Tetrapeptide-21, Sodium Hyaluronate, Inulin, Alpha-Glucan Oligosaccharide, Lactic Acid/Glycolic Acid Copolymer, Panthenol, Ethylhexylglycerin, Hydroxypropyl Cyclodextrin, Dunaliella Salina (Green Algae) Extract, Polysorbate 20, Caprylyl Glycol, Citric Acid, Glyceryl Caprylate, Pantolactone, Phenylpropanol, Polyvinyl Alcohol, Carbomer, Potassium Sorbate, Sodium Benzoate, Sorbic Acid, Phenoxyethanol, Xanthan Gum
Common questions
Frequently asked
Can I use this alongside prescription tretinoin or other retinoids?
Yes—peptides and retinoids work via different pathways, so layering is generally well-tolerated. Apply Liquid Peptides first on clean, dry skin, allow a minute for absorption, then follow with your retinoid and moisturiser. If irritation occurs, separate them by alternating evenings.
How long before I see a visible change in fine lines?
With twice-daily use, most users report a subtle softening of expression lines after 6–8 weeks; deeper firmness benefits build over 12 weeks. Consistency is key—peptides signal gradually rather than deliver an instant cosmetic effect.
Is this suitable for sensitive or rosacea-prone skin?
The formula is fragrance-free and alcohol-free, but the 13-peptide blend plus mild acids can tingle on very reactive skin. Patch-test behind the ear for three nights; if no redness or stinging occurs, introduce every other day before building to daily use.
Where does this fit in my morning routine with vitamin C and SPF?
Apply Liquid Peptides after cleansing and before vitamin C serum; its lightweight texture won’t pill under subsequent layers. Always finish with broad-spectrum SPF 30+ as peptides do not replace photoprotection.
Does it need refrigeration to keep the peptides stable?
No—store at room temperature away from direct sunlight. The airless pump protects the actives from oxidation, so refrigeration is unnecessary unless you simply prefer the cooling sensation.
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