Once the kind of ingredient you’d skim past on the back of a serum bottle, these clever chains of amino acids have moved firmly into the skincare spotlight, tapping into a bigger shift towards collagen support, skin health and a fresher, more natural approach to ageing.
And they’re not working alone.
The new beauty philosophy is increasingly less about chasing a quick fix and more about looking at skin from every angle. Caci describes the combination of at-home skincare, in-clinic skin treatments and cosmetic injectables as the ultimate ‘power throuple’, with each playing a distinctly different role in how skin looks and behaves.

Peptides fit beautifully into that picture. Made from short chains of amino acids, they’re associated with proteins such as collagen and elastin, two words anyone remotely interested in firm, bouncy-looking skin will already know well. At Caci, peptides feature in its collagen-boosting Sonophoresis Skin Infusion, where sound waves are used to infuse a concentration of peptides and minerals into the skin. The treatment is designed to protect and firm while reducing the appearance of lines and wrinkles and stimulating collagen.
It’s part of a broader movement away from simply treating what we see in the mirror. As Caci explains, skin ageing doesn’t happen in a single layer, so treating only one layer won’t necessarily deliver the full picture. Skin conditioning treatments can target concerns such as texture, tone, hydration and luminosity, while injectables work differently beneath the surface.
And our attitude towards those injectables is changing, too. Caci data shows just under 40% of its customers regularly opt for anti-wrinkle or injectable treatments, suggesting the needle is moving, quite literally, on how cosmetic intervention fits into the modern beauty routine. Nor is it confined to one generation. Caci’s injectable customers span age groups from 18–35 through to 56–75 and beyond. What was once whispered about is increasingly sitting comfortably alongside serums, facials and skin treatments in the beauty toolkit.

The treatments themselves are evolving with that shift. The frozen foreheads and conspicuously plumped features once synonymous with cosmetic treatments are giving way to a softer aesthetic. Caci points to subtle enhancements designed to support what’s happening beneath the skin, with treatments spanning anti-wrinkle injections and dermal filler through to options such as Profhilo and Structura. The aim? To look like yourself, only fresher.
It’s a sentiment increasingly reflected in the way we approach beauty generally. Instead of pinning our hopes on one miracle cream or occasional treatment, there’s a growing appetite for personalised skin plans combining consistent home care with professional treatments selected for different concerns.

Think of it as beauty’s version of strength training. Rather than disguising every perceived imperfection, the focus is shifting towards supporting the skin itself, from hydration and texture to collagen, elasticity and overall condition.
Peptides may be the ingredient currently enjoying top billing, but the real trend is bigger than any single serum. Modern beauty is becoming more layered, considered and refreshingly subtle.





