Best for
Fine lines, loss of firmness & general anti-aging support
Skin type
Suits most skin types, generally gentle enough for sensitive skin
Pairs well with
Hyaluronic acid & niacinamide
Peptides are short chains of amino acids that act as messengers, signaling skin cells to perform specific functions — most commonly, to produce more collagen. They’re a popular anti-aging ingredient, though it’s worth understanding both what they can and can’t realistically do.
What peptides do for skin
- Signal collagen production — certain peptides “trick” skin into behaving as though it’s healing, triggering new collagen production that can reduce the appearance of fine lines over time
- Support the skin barrier — some peptides help produce the proteins and lipids the barrier needs for repair and regeneration
- Different peptides, different jobs — neuropeptides target expression lines, copper peptides support healing and repair, signal peptides focus on barrier function
The evidence for peptides is real but more modest than for some other actives — dermatology research consistently notes that peptides do not replace retinoids for collagen stimulation, and results tend to be gradual rather than dramatic.
What percentage of peptides should you use
Unlike niacinamide or vitamin C, peptide concentration is rarely disclosed by brands, and there’s no widely agreed “effective percentage” the way there is for other actives. A practical rule: check the ingredient list — peptides listed near the top (among the first several ingredients) generally indicate a more meaningful concentration than ones listed near the end.
Who should use peptides
Peptides suit most skin types, and are generally gentle enough for sensitive skin when the formula doesn’t include other strong actives. They’re most commonly reached for by people focused on fine lines, loss of firmness, or general anti-aging support.
What to pair peptides with
Peptides are considered one of the easier ingredients to layer into an existing routine, since they don’t typically cause irritation the way acids or retinol can.
Frequently asked questions
Do peptides really work?
Some peptides have real, demonstrated benefits in clinical research, but results are typically gradual and more modest than stronger actives like retinoids — think of them as a supporting ingredient, not a replacement for proven actives.
Are peptides better than retinol?
No — for collagen stimulation specifically, the evidence supporting retinoids is significantly stronger and more consistent than for peptides.
Can I use peptides with retinol or vitamin C?
Yes, peptides are generally compatible with most other actives and are considered a gentle addition to a routine.