You've seen "peptide" on every other serum and moisturiser lately. But what exactly are peptides, and do they actually do anything — or are they just another buzzword on a nice label?
The short answer: peptides are one of the most genuinely effective ingredients in skincare. Here's what they are, how they work, and why they belong in your routine.
What Are Peptides?
Peptides are short chains of amino acids — the building blocks of proteins. In your skin, the most important protein is collagen, which gives skin its structure, firmness, and bounce. As you age (typically from your mid-20s onwards), collagen production naturally slows down, leading to the classic signs of skin ageing: fine lines, sagging, and loss of plumpness.
Peptides step in by signalling your skin cells to produce more collagen. Think of them as a message your skin sends itself: "we need more structure here." Applied topically in a cream or serum, peptides deliver that same message from the outside in.
What Do Peptides Actually Do?
Depending on the type of peptide, they can:
Boost collagen production. Signal peptides (like Matrixyl) communicate with fibroblasts — the cells responsible for producing collagen — to increase output. The result over time: firmer, plumper skin with fewer fine lines.
Improve skin barrier function. Some peptides help reinforce the skin's outermost protective layer, reducing moisture loss and making skin more resilient to environmental stressors. This is especially valuable for dry or sensitive skin.
Smooth and firm. With consistent use, peptide-rich products visibly reduce the depth of wrinkles and improve overall skin texture — not overnight, but measurably over 4–12 weeks.
Support skin repair. Certain peptides promote healing and cell renewal, helping skin recover from damage caused by UV exposure, pollution, or inflammation.
Who Should Use Peptides?
The honest answer: almost everyone benefits from peptides, but they're most impactful for:
- Anyone in their late 20s and beyond noticing the first signs of ageing (fine lines, loss of firmness)
- Dry skin types — peptides often appear alongside ceramides and hyaluronic acid in formulas designed to restore the skin barrier
- Those with sensitive skin — peptides are generally very well tolerated and don't cause the irritation that retinol or acids sometimes do
- Anyone looking for an anti-ageing approach without harsh actives
How to Use Peptide Products
Peptides work best when they can stay on the skin — which makes them ideal for moisturisers and leave-on serums rather than cleansers (which rinse off too quickly).
The golden rule: apply peptide products after cleansing and toning, before heavier moisturisers or oils. The thinner the formula, the earlier in your routine it goes.
One important note: don't layer peptides with strong acids (like vitamin C, AHA, or BHA) in the same application. The acidic environment can break down the peptide chains before they've had a chance to work. Use vitamin C in the morning and your peptide products in the evening, or alternate days.
How Long Does It Take to See Results?
Patience is key. Collagen takes time to build — most people notice visible firming and improved texture between 4 and 8 weeks of consistent use. The effects are cumulative, so the longer you stick with it, the better your skin looks.
A Peptide Product Worth Trying
If you're new to peptides, a daily moisturiser is the easiest entry point. Our Fonce Korea Peptide Anti-Aging Face Cream combines peptides with deep hydration in a formula suitable for day and night use. It's designed specifically for dry skin — one of the most common skin types in the UK — and delivers firming, lifting, and moisture retention in a single step.
The Bottom Line
Peptides aren't a miracle cure — but they're one of the few skincare ingredients with solid science behind them. Used consistently, they genuinely improve skin firmness, hydration, and resilience. If you haven't tried a peptide-based product yet, your future skin will be glad you started.
