Peptides Explained: What They Actually Do for Ageing Skin

Peptides are short chains of amino acids that signal your skin to behave like younger skin — producing more collagen, repairing itself faster, and holding onto structure it would otherwise lose over time. Unlike actives that work by exfoliating or bleaching pigment, peptides work by sending a message, which is part of why they're so well tolerated even on sensitive skin.

What a Peptide Actually Is

Proteins like collagen are built from long chains of amino acids. Break those chains into smaller fragments, and you get peptides — pieces small enough to signal the skin without needing to be a full protein themselves. Applied topically, certain peptides mimic the signals that trigger collagen production, essentially convincing skin cells that there's repair work to do, even when there isn't an actual injury prompting it.

This is a fundamentally different mechanism from most anti-ageing actives. Retinoids speed up cell turnover. Vitamin C interrupts pigment production and neutralises free radicals. Peptides, by contrast, work upstream — encouraging the skin to produce more of its own structural proteins rather than exfoliating, bleaching, or protecting against damage directly.

What They Actually Help With

• Supporting collagen and elastin production, which naturally slows with age
• Improving the appearance of fine lines and loss of firmness over consistent use
• Supporting barrier repair, since some peptides also play a role in skin's natural defence functions

What peptides won't do is deliver the fast, visible results of a strong exfoliant or filler. This is a slow-build ingredient — most people need eight to twelve weeks of consistent use before noticing a real difference in firmness or texture.

Who Should Use Them

Almost anyone, which is part of their appeal. Peptides are one of the gentler anti-ageing actives available, well tolerated by sensitive skin, and safe to use alongside most other actives without the layering caution that comes with retinoids or high-percentage acids. They're a reasonable starting point for anyone newly interested in anti-ageing skincare who wants to avoid the irritation that can come with stronger options.

How to Use Them

Peptide serums typically go on after cleansing and toning, before a heavier moisturiser. They layer well with vitamin C, hyaluronic acid, and niacinamide. The main caution is with strong acids — very low pH formulas can break down peptide structures before they get a chance to work, so it's worth using peptide serums at a different time of day from your strongest exfoliating acid if your routine includes one.

Building a Routine Around Peptides

1. Cleanse
2. Apply a peptide serum to clean, slightly damp skin
3. Layer a moisturiser to lock it in
4. SPF every morning, since UV damage works directly against everything peptides are trying to support

When to See a Dermatologist

Peptides are gentle enough that most people won't need professional guidance to use them safely. If you're combining them with prescription retinoids or other intensive treatments, it's worth checking with a dermatologist on sequencing, simply to get the most out of both.

Shop the Collection

Eastern Curlew's Anti-Ageing collection includes peptide serums and creams formulated for exactly this kind of long-term, gentle support. Browse the full range from Eastern Curlew.

FAQ

How long until peptides show results?
Most people need eight to twelve weeks of consistent use before noticing a meaningful difference in firmness or texture.

Can I use peptides with retinol?
Yes, though it's often recommended to use them at different times of day, since retinol's exfoliating effect can sometimes reduce peptide stability if layered directly together.

Are peptides suitable for sensitive skin?
Generally yes — they're one of the better-tolerated anti-ageing actives precisely because they work by signalling rather than exfoliating.