Peptides in Skincare
Best Peptide Serums, Scored on Evidence and Value
Five peptide serums scored against published evidence, formulation transparency, value and tolerability — with the weights published so you can disagree with them.
The short answer
#1 · Best overall
The Ordinary Multi-Peptide + HA Serum
The default recommendation. It combines the peptide complexes with the most human data behind them at a price that makes the modest expected benefit an easy trade.
#2 · Best copper peptide option
The Ordinary Multi-Peptide Copper Peptides 1%
The most transparent copper peptide product at this price. Pick it if retinol irritates you, and accept that it needs its own slot in the routine.
#3 · Best for expression lines
Medik8 Liquid Peptides
A reasonable choice if forehead and crow’s-feet lines are specifically what bother you. For general firmness, cheaper multi-peptide options do the same job.
Peptide serums are one of the few categories where the cheapest option is genuinely competitive with the most expensive, because the peptide raw materials are not what makes a skincare product expensive. That makes the price spread here worth understanding before you spend anything.
We scored five serums against five weighted criteria, with the heaviest weight on whether there is human evidence for the specific peptides used at anything like the concentration in the bottle. The weights are published below so you can re-rank them for yourself.
Compare all 5 at a glance
| # | Product | Key peptides | Disclosed % | Suits | Score |
|---|---|---|---|---|---|
| 1 | The Ordinary Multi-Peptide + HA Serum Best overall | Matrixyl 3000, Matrixyl synthe’6, Argireline | Partial | Most skin types | 8.3/10 |
| 2 | The Ordinary Multi-Peptide Copper Peptides 1% Best copper peptide option | GHK-Cu 1%, Matrixyl 3000 | Yes — 1% | Normal to dry | 7.8/10 |
| 3 | Medik8 Liquid Peptides Best for expression lines | Argireline and supporting peptides | Partial | Normal, combination | 7.0/10 |
| 4 | The Inkey List Peptide Moisturizer Best if you want one step | Peptide blend | No | Dry, normal | 7.0/10 |
| 5 | Paula's Choice Peptide Booster Best for sensitive skin | Multiple peptide blend | No | Sensitive, reactive | 6.8/10 |
Scores are calculated from the weighted criteria in our methodology, not assigned by hand. We have not independently laboratory-tested these products, and we do not claim to have. Scores are based on published ingredient lists, disclosed concentrations, and the peer-reviewed literature on the specific peptides used.
The picks in detail
#1 · Best overall
The Ordinary Multi-Peptide + HA Serum
The Ordinary
- Price
- $
- Key Peptides
- Matrixyl 3000, Matrixyl synthe’6, Argireline
- Concentration
- Partial
- Skin Type
- Most skin types
Good
- Several well-studied peptide complexes in one formula
- Among the cheapest ways to get these specific peptides
- Fragrance-free and generally well tolerated
Not so good
- Discloses which peptide complexes are present but not all concentrations
- Slightly tacky finish that some people dislike under makeup
- Renamed from "Buffet", so older reviews can be confusing
Verdict. The default recommendation. It combines the peptide complexes with the most human data behind them at a price that makes the modest expected benefit an easy trade.
We have not tested this product ourselves. This assessment is based on published formulation and ingredient information.
#2 · Best copper peptide option
The Ordinary Multi-Peptide Copper Peptides 1%
The Ordinary
- Price
- $$
- Key Peptides
- GHK-Cu 1%, Matrixyl 3000
- Concentration
- Yes — 1%
- Skin Type
- Normal to dry
Good
- States the copper peptide concentration outright, which most brands will not
- Copper peptides are a reasonable option for people retinol does not suit
- Distinctive blue colour is a genuine sign the ingredient is present
Not so good
- Cannot be layered with vitamin C or acids in the same routine
- Evidence for GHK-Cu in cosmetic ageing is thinner than for Matrixyl
- The colour can transfer onto light fabrics
Verdict. The most transparent copper peptide product at this price. Pick it if retinol irritates you, and accept that it needs its own slot in the routine.
We have not tested this product ourselves. This assessment is based on published formulation and ingredient information.
#3 · Best for expression lines
Medik8 Liquid Peptides
Medik8
- Price
- $$$
- Key Peptides
- Argireline and supporting peptides
- Concentration
- Partial
- Skin Type
- Normal, combination
Good
- Weighted toward the peptides with the most direct data on dynamic lines
- Lightweight texture that layers well
- Brand publishes more formulation detail than most at this tier
Not so good
- Expensive per millilitre
- Not all concentrations disclosed
- Narrower use case than a multi-peptide formula
Verdict. A reasonable choice if forehead and crow’s-feet lines are specifically what bother you. For general firmness, cheaper multi-peptide options do the same job.
We have not tested this product ourselves. This assessment is based on published formulation and ingredient information.
#4 · Best if you want one step
The Inkey List Peptide Moisturizer
The Inkey List
- Price
- $
- Key Peptides
- Peptide blend
- Concentration
- No
- Skin Type
- Dry, normal
Good
- Combines peptides with moisturiser, removing a step
- Very affordable
- Comfortable on dry skin
Not so good
- Peptides sit low in the ingredient list
- No disclosed concentrations
- A moisturiser with peptides rather than a peptide treatment
Verdict. Fine as a simplifier if you want peptides without adding a step, but do not expect it to match a dedicated serum.
We have not tested this product ourselves. This assessment is based on published formulation and ingredient information.
#5 · Best for sensitive skin
Paula's Choice Peptide Booster
Paula's Choice
- Price
- $$$
- Key Peptides
- Multiple peptide blend
- Concentration
- No
- Skin Type
- Sensitive, reactive
Good
- Fragrance-free, minimal irritant load, well suited to reactive skin
- Airless packaging protects the formula properly
- Layers cleanly without pilling
Not so good
- No disclosed peptide concentrations at all
- Several times the price of comparable formulas
- The brand publishes no clinical data specific to this product
Verdict. The one to choose if your skin reacts to everything. You are paying a significant premium for formulation restraint rather than for more active.
We have not tested this product ourselves. This assessment is based on published formulation and ingredient information.
How we scored these
Every product is scored 0–10 against each criterion below, and the overall score is those numbers put through these weights. We publish the weights so you can disagree with them — if price matters more to you than it does to us, you can re-rank the table in your head.
| Criterion | Weight | What we looked at |
|---|---|---|
| Evidence quality | 30% | Is there human data on the specific peptides used, at a comparable concentration? Independent trials count for more than manufacturer studies, and rodent data does not count at all. |
| Formulation transparency | 25% | Does the brand disclose actual peptide concentrations, or only that a peptide is present? Where in the ingredient list does it sit? |
| Value | 20% | Cost per millilitre against how much active you are actually getting. A cheap serum with a token amount of peptide is not good value. |
| Tolerability | 15% | Fragrance, essential oils, alcohol, and reported irritation. Peptides are gentle; the rest of the formula often is not. |
| Texture and usability | 10% | Whether it layers under other products without pilling, and whether the packaging protects the formula. |
Testing. We have not independently laboratory-tested these products, and we do not claim to have. Scores are based on published ingredient lists, disclosed concentrations, and the peer-reviewed literature on the specific peptides used.
Money. Some links here earn us a commission, marked as such at the link. No brand paid for a position, saw this before it published, or can change a score. Rank order comes from the scores above and nothing else —how we make money.
Last reviewed. August 2026
How to choose
Start with what bothers you. Lines that only appear when you move your face are a different problem from skin that has lost firmness, and different peptides address each.
Then check what else is in your routine. Copper peptides need their own slot away from vitamin C and acids. Everything else layers freely.
Then look at price per millilitre, not price. A 30ml bottle at twice the price of a 15ml one is the same money.
And be realistic. Every product here is a modest, slow improvement at best. If you are not using sunscreen daily, that is a far larger lever than any of them, and it is cheaper.
Questions people ask
Do peptide serums actually work?
Modestly, and slowly. The better-studied peptide complexes show small but measurable improvements in fine lines over 8 to 12 weeks in published trials, most of which were funded by the ingredient manufacturers. Treat the marketing figures as a ceiling rather than an expectation, and treat daily sunscreen as more important than any of them.
How long before I see anything?
Eight to twelve weeks for most peptides. Anything that changes in days is hydration, not peptide activity.
Can I use a peptide serum with retinol?
Usually yes, though copper peptides are best kept to a different time of day. Our ingredient conflict checker will work out the specific combination you own.
Is a more expensive peptide serum better?
Not reliably. The cheapest product in this ranking scores highest overall, because peptide raw materials are not the expensive part of a skincare formula. You are usually paying for packaging, brand and texture.
Should I use more than one peptide serum?
There is no harm in it and no clear benefit. Most multi-peptide formulas already contain several complexes, and layering two products with overlapping ingredients mostly costs money.
Compare again
| # | Product | Key peptides | Disclosed % | Suits | Score |
|---|---|---|---|---|---|
| 1 | The Ordinary Multi-Peptide + HA Serum Best overall | Matrixyl 3000, Matrixyl synthe’6, Argireline | Partial | Most skin types | 8.3/10 |
| 2 | The Ordinary Multi-Peptide Copper Peptides 1% Best copper peptide option | GHK-Cu 1%, Matrixyl 3000 | Yes — 1% | Normal to dry | 7.8/10 |
| 3 | Medik8 Liquid Peptides Best for expression lines | Argireline and supporting peptides | Partial | Normal, combination | 7.0/10 |
| 4 | The Inkey List Peptide Moisturizer Best if you want one step | Peptide blend | No | Dry, normal | 7.0/10 |
| 5 | Paula's Choice Peptide Booster Best for sensitive skin | Multiple peptide blend | No | Sensitive, reactive | 6.8/10 |
Scores are calculated from the weighted criteria in our methodology, not assigned by hand. We have not independently laboratory-tested these products, and we do not claim to have. Scores are based on published ingredient lists, disclosed concentrations, and the peer-reviewed literature on the specific peptides used.
This article is for information only and is not medical advice. Nothing here is intended to diagnose, treat, cure or prevent any disease. Speak to a qualified healthcare professional before changing anything about your health routine.