Short chains of amino acids, big promises on firmness — here’s what peptides actually do, plus 15 formulas worth the shelf space.
Retinol gets the headlines and vitamin C gets the hype, but ask a dermatologist which ingredient they reach for when skin needs repairing rather than resurfacing, and peptides come up again and again. They’re often described as skincare’s silent powerhouse: low drama, no sting, and a track record for supporting healing, slowing visible ageing, and encouraging collagen and elastin production.
So what exactly is a peptide?
Strip it back and peptides are short chains of amino acids — the same building blocks that make up proteins including collagen, elastin and keratin. Those proteins are what keep skin looking firm, springy and youthful. Applied topically, peptides essentially act as messengers, nudging skin to behave the way it did when it was producing those proteins more efficiently.
Because they work with the skin’s own repair signalling rather than forcing turnover, peptides tend to be well tolerated across skin types — including sensitive and breakout-prone complexions that struggle with stronger actives.
Below, a run-through of the peptide serums, creams and body formulas worth knowing, with input from holistic aesthetician Amity Murray and board-certified dermatologist Dr Nicole Ruth.
The best peptide skincare, tried and tested
Best for glass skin: Medicube PDRN Pink Peptide Serum
£17, now £12 (29% off) at Amazon; £20 at Sephora
One of the most talked-about Korean launches in recent memory, this serum pairs the two ingredients currently dominating the skin-plumping conversation: PDRN and peptides. PDRN (polydeoxyribonucleotide) is valued for supporting repair and regeneration, which in turn helps elasticity and overall skin quality, while the peptide complex works on collagen and firmness over time. Humectants pull moisture in for an immediate plumping effect, and niacinamide strengthens the barrier while adding radiance.
Key ingredients: Rose PDRN, five-peptide complex, niacinamide, adenosine
Best for hydration: Mizon 7 Vegan Peptide Booster Serum
£19, now £14 (26% off) at Amazon
This viral formula is both multi-peptide and multi-purpose, delivering hydration, texture refinement and a brighter tone in one step. Seven peptides work alongside niacinamide, allantoin and mixed-weight hyaluronic acid, and the near-watery texture absorbs fast enough to layer without pilling.
Key ingredients: Glycerin, niacinamide, allantoin, hydrolysed hyaluronic acid, sodium hyaluronate, peptide blend (hexapeptide-8, palmitoyl tripeptide-5, acetyl tetrapeptide-5, palmitoyl pentapeptide-4, cetyl hexapeptide-38, nonapeptide-1, pentapeptide-18)
Best for: Dry, combination and acne-prone skin
Also worth knowing: Free from silicones, phthalates, parabens, mineral oil, alcohol and fragrance
Size: 150ml
Best for elasticity: Medik8 Advanced Pro-Collagen+ Peptide Cream
£79 at Medik8; £79, now £63 (20% off) at Lookfantastic; £79 at Sephora
For skin that has visibly lost firmness — on the face or the neck — this high-performance cream targets slackness by encouraging collagen production, using peptides alongside the brand’s trademarked Growth Factor Mini Protein. In an independent clinical trial, elasticity improved within a week and hydration rose by 35 per cent.
Key ingredients: Growth Factor MiniProtein, NAD+ Longevity Booster, Anti-A.G.E. Peptide
Best for: Deeper wrinkles
Size: 50ml
Best for suppleness: SkinCeuticals P-Tiox Cream
£135 at Lookfantastic
Inspired by the boom in injectable wrinkle-relaxing treatments, P-Tiox Cream goes after visible expression lines with neuropeptide-inspired actives and a generous dose of hydrators. Peptides support collagen and elasticity while the moisturising base improves smoothness and suppleness on contact. Rich, but not heavy.
Key ingredients: Peptides, niacinamide, zinc PCA
Best for beginners: The Inkey List Collagen Peptide Serum
£15 at Amazon; £15, now £12 (20% off) at Sephora
Murray recommends this one to anyone just starting out or deliberately keeping their routine minimal, describing it as a clean, effective formula that hydrates, smooths lines and suits sensitive skin. The price also means you won’t ration it — apply generously to face, neck and décolletage.
Key ingredients: Collagen peptides
Best for: Dry, dull skin
Fragrance-free: No
Best pharmacy buy: Olay Collagen Peptide Face Cream
£18, now £17 (6% off) at Amazon
A fragrance-free moisturiser that sits well under SPF and make-up, making it a strong pick for sensitive skin. Dr Ruth points to its palmitoyl pentapeptide content, a peptide known to help stimulate collagen and elastin by mimicking the skin’s own repair signals — effectively prompting renewal, which shows up as improvement in fine lines, firmness and texture. Because the molecule is small and lipid-linked thanks to the palmitoyl group, she notes it penetrates more readily than some peptides, delivering benefits deeper into the dermis.
Key ingredients: Collagen peptide, niacinamide, provitamin B5
Best for: Dry, ageing, textured skin
Fragrance-free: Yes
Best for fine lines: Medik8 Liquid Peptides
£79 at Medik8, Sephora and Lookfantastic
Dr Ruth calls this the high-tech option: a 30 per cent peptide complex built with micro molecules for better penetration. It sits at the pricier end, but it’s a strong choice for smoothing fine lines while hydrating and adding glow — and unusually for anti-ageing skincare, plumper, better-hydrated skin is visible within a week.
Key ingredients: Lactic acid, glycolic acid
Best for: Mature skin
Fragrance-free: Yes
Best copper peptides: The Ordinary Multi-Peptide + Copper Peptides 1% Serum
£29 at Amazon
Think of copper peptides as multi-tasking repair agents. Dr Ruth explains that this serum boosts collagen and elastin while calming inflammation and supporting healing, which makes it useful for restoring bounce to ageing or compromised skin. Affordable and easy to slot into an existing routine — though she notes the research is still evolving, with further studies underway on copper peptides in dermatology.
Key ingredients: Hyaluronic acid, peptides
Best for: All skin types
Fragrance-free: Yes
Best viral pick: Rhode Peptide Glazing Fluid
£32 at Rhode Skin and Sephora
Hailey Bieber’s cult product needs little introduction, and it requires almost no adjustment to slot into your routine. If what you want is a minimalist serum with a dewy finish and barrier-supporting peptides, Dr Ruth rates it for patients chasing that hydrated, glass-skin look without irritation.
Key ingredients: Niacinamide, peptides, hyaluronic acid, marula oil
Best for: All skin types
Fragrance-free: Yes
Best for breakout-prone skin: InnBeauty Project Extreme Cream
£51 at Sephora
A clean, effective formula that Murray says delivers serious hydration while minimising lines and wrinkles. If you’re used to lightweight water creams it may feel richer at first, but it doesn’t clog or leave a tacky film. Used consistently — it’s safe morning and night despite containing retinol — skin looks firmer with a healthy sheen.
Key ingredients: Bio retinol, lifting peptides, ceramides, reverse emulsion technology
Best for: Dry and mature skin
Fragrance-free: Yes
Best for smoothing: SkinCeuticals P-TIOX Serum
£135 at Lookfantastic
A skincare-community favourite, this serum combines biomimetic peptides with 10 per cent argireline to target expression lines and refine texture over time. Dr Ruth is careful not to draw direct comparisons between topical products and injectables, but says the results are promising for softening fine lines, explaining that argireline works by inhibiting neurotransmitter release at the neuromuscular junction — which can visibly soften dynamic wrinkles.
Key ingredients: Hexapeptide, dipeptide, 5% PHA, niacinamide, laminaria
Best for: Mature skin
Fragrance-free: Yes
Size: 30ml
Best French pharmacy cream: Filorga Time-Filler 5XP Cream Clean
£68 at Amazon
French pharmacy skincare has long felt like an insider advantage, and this one is now widely available. Murray describes it as French research meeting luxury, in a hydrating cream that leaves skin looking plump. The creamy-gel texture makes it particularly good for oily skin, hydrating while gently mattifying.
Key ingredients: Peptides, hyaluronic acid, sea fennel extract
Best for: Oily skin
Fragrance-free: No
Best for crepiness: Allies of Skin Multi Peptides & Growth Factors Advanced Lifting Serum
£176 at Cult Beauty; £47 at Sephora
Pronounced sagging and crepiness set in once skin has lost a meaningful amount of elasticity. This serum tackles both, pairing a growth factor complex with actives chosen to tighten, firm and rejuvenate, while also supporting barrier function so cellular renewal keeps ticking over.
Key ingredients: 3% sh-Oligopeptide-1 Growth Factor Complex, 9% lifting peptide complex, MSM, phospholipids, copper lysinate, glycolipids
When to use: After cleansing, morning and/or evening
Best for the body: U Beauty The SUPER Body Hydrator
£163 at Cult Beauty
Peptides aren’t a face-only proposition. Murray recommends this body moisturiser for anyone contending with dry or dehydrated skin, praising the smoothness it delivers. It’s lightweight enough to sink in without effort and leaves a subtle glow behind.
Key ingredients: Vitamin C, peptides, hyaluronic acid
Best for: All skin types
Fragrance-free: Yes
Best with growth factors: Eighth Day Regenerative Serum
£265 at Harvey Nichols
Developed by a dermatologic surgeon, this is what Murray considers a results-driven option for clients already running an advanced regimen. The formula covers all bases: GABA, an active neuropeptide that supports healing and repair; hyaluronic acid for moisture; niacinamide to calm inflammation; and glycolic acid for texture. The peptide element is a complex of 24 bio-identical peptides aimed at visibly renewed skin.
Key ingredients: Growth factors, peptides, amino acids
Best for: Mature, sensitive skin
Fragrance-free: Yes
The bottom line
Peptides won’t replace an injectable, and no reputable dermatologist will tell you otherwise. What they will do is work quietly and consistently — supporting collagen, reinforcing the barrier and improving firmness — without the irritation curve that comes with stronger actives. Start with one formula, use it daily, and give it a few months.
