Medik8 Liquid Peptides Advanced MP Review: Peptide Serum
The Verdict
A dense, well-supported peptide serum that leans on genuinely established actives — Matrixyl 3000, Acetyl Hexapeptide-8 and copper peptides — rather than a single headline ingredient, with multi-weight hyaluronic acid keeping the skin-feel comfortable rather than tight. It's formulated to sit alongside vitamin C and vitamin A as a supportive daily step, not to replace either, so treat it as one part of a fuller routine rather than a stand-alone fix for firmness or lines. As always, if you're pregnant, breastfeeding, or unsure how it fits your routine, get in touch with our team before starting.
Medik8 Liquid Peptides Advanced MP | Peptide Serum | 30ml
£79.00
Medik8 Liquid Peptides Advanced MP is a concentrated multi-peptide serum built around a 30% peptide complex, led by Matrixyl 3000, Acetyl Hexapeptide-8 and copper peptides, alongside multi-weight hyaluronic acid. It's formulated for all skin types and tones, including sensitive skin, as a lightweight daily step designed to help improve the appearance of expression lines and support the look of skin firmness over consistent use.
Quick facts
| Detail | What it is |
|---|---|
| Product type | Multi-peptide serum |
| Format | 30ml pump bottle |
| Key actives | 30% multi-peptide complex — Matrixyl 3000, Acetyl Hexapeptide-8, Copper Peptides |
| Also contains | Micro-encapsulated (multi-weight) Hyaluronic Acid, Prebiotic Complex |
| Texture | Lightweight, silky, fast-absorbing serum |
| Suits | All skin types and tones, including sensitive skin |
| When to use | Morning and/or evening, after cleansing, before heavier serums and moisturiser |
| Price band | Upper-mid Medik8 serum tier — see the product page for current pricing |
What's actually in the formula
The formula is built around a 30% multi-peptide complex rather than a single signature peptide. Matrixyl 3000 — a well-studied peptide blend of Palmitoyl Tripeptide-1 and Palmitoyl Tetrapeptide-7 — is included to help support the look of firmer, smoother-looking skin. Acetyl Hexapeptide-8, sometimes referred to by its trade name Argireline, is included to help improve the appearance of expression lines, particularly around areas of repeated facial movement. Copper peptides round out the complex, valued for their role in supporting the skin's own conditioning and general resilience.
Sitting alongside the peptide complex is hyaluronic acid, delivered in a micro-encapsulated, multi-weight form so it can draw and hold moisture at different depths of the skin's surface rather than sitting purely on top — keeping the serum feeling plumped and comfortable rather than tacky, a sensible pairing for peptide actives that don't otherwise bring much hydration of their own. A prebiotic complex is also included, formulated to support the look of a balanced, comfortable skin barrier over daily, long-term use.
Who it's formulated for
- All skin types and tones, including sensitive skin, looking for a peptide-led step rather than an acid or retinoid-led one
- Those wanting to help improve the appearance of expression lines and support the look of skin firmness over time
- Anyone already using vitamin C and vitamin A products who wants a peptide serum that layers in without competing
- Skin that finds stronger actives irritating and prefers a gentler, more supportive daily step
It isn't an exfoliant, a retinoid, or a fast-acting treatment — peptides work cumulatively, so this is a long-game addition to a routine rather than something to expect visible change from overnight. If you're new to actives altogether or unsure where a peptide serum fits, get in touch and our team can talk it through.
How to use it in a routine
Apply 1–2 pumps to cleansed skin across the face, neck and décolletage, morning and/or evening, and allow it to absorb before layering anything heavier. As a water-based serum, it generally sits early in a routine — after cleansing and any toner step, before oil-based serums such as vitamin C, and before moisturiser and, in the morning, sunscreen. Medik8 positions peptide serums like this one as a supportive layer within its wider CSA philosophy, designed to sit alongside vitamin C and vitamin A rather than replace either. If introducing several actives together for the first time, bring them in one at a time, and a patch test is worth doing first.
Liquid Peptides Advanced MP vs Clarity Peptides
Both carry the Medik8 peptide name but do different jobs. Liquid Peptides Advanced MP is a firmness and expression-line focused multi-peptide serum. Clarity Peptides is a 10% niacinamide and peptide serum aimed at redness, blemish-prone and dull-looking skin. If firmness and the appearance of lines is your main concern, Liquid Peptides Advanced MP is the better starting point; if congestion or uneven tone is the priority, Clarity Peptides fits better — some routines use both at different times of day.
Frequently asked questions
Can I use Liquid Peptides Advanced MP with retinol?
Yes — it's formulated as a supportive step designed to sit within a routine alongside vitamin A. A common approach is peptide serum first on cleansed skin, then a retinoid such as R-Retinoate Intense once your skin has built tolerance, moving from wherever you currently sit in that ladder rather than starting both together.
How long before I see results?
Peptides work cumulatively rather than instantly, so this is a serum to judge over weeks of consistent use rather than days. We haven't independently verified specific timelines, so we'd rather be honest about that than repeat an unsourced figure.
Can I use Medik8 Liquid Peptides Advanced MP if I'm pregnant or breastfeeding?
If you're pregnant or breastfeeding, please contact our team for advice before use.
The Skintique Academy view
Liquid Peptides Advanced MP is a considered, well-supported peptide serum — the 30% complex leans on established actives like Matrixyl 3000, Acetyl Hexapeptide-8 and copper peptides rather than a single novelty ingredient, and the multi-weight hyaluronic acid keeps it comfortable to wear daily. It's best understood as a supportive, cumulative step within a wider CSA routine rather than a fast or stand-alone fix for firmness and lines. As always, if you're pregnant, breastfeeding, or unsure how it fits your routine, our team is here to help — just get in touch.