A few years ago, the average skincare conversation revolved around some trusty and well-documented pillars: retinol, vitamin C, and hyaluronic acid being the main ones. But today, there is a new host of ingredients that seem to be dominating the beauty headlines, dermatologists' recommendations, and skincare wish lists; peptides.
Peptides are actually not a new phenomenon in the world of skincare (and they are a family that we at Caci have been championing for years now), but they are now popping up at every turn. Serums, moisturisers, eye creams, and even professional treatment protocols are all now honing in on them, and they have now been coined the ‘silent powerhouse’ of skincare. Dermatologists praise their ability to deliver and support firmer, healthier-looking skin, and social media can’t get enough of them.
So, what exactly are peptides, and why are they suddenly everywhere?
The peptide boom goes beyond beauty. According to a recent Forbes article, peptides have become one of the most talked-about topics in health and wellness. From longevity and biohacking enthusiasts to wellness influencers, peptides are one of the most talked-about thing in the world of wellness right now.
From a scientific standpoint, peptides are essentially short chains of amino acids that come together to create proteins. Some of the most important proteins in our skin, collagen and elastin, are built from these very amino acids. If you think about collagen as the scaffolding that keeps skin firm and plump, peptides are part of the construction crew that help to keep everything running smoothly.
The reason this matters becomes increasingly obvious the older we get. From our mid-twenties onwards, collagen production will naturally begin to decline by around one percent per year. Because this is so gradual, it is not something you will notice overnight. One day your skin will look exactly as it always has, and a few years later you will start spotting fine lines around your eyes, a little less bounce through your cheeks, and skin that doesn’t seem to snap back quite as enthusiastically as it once did in our early twenties, sigh.
That’s where peptides can come in to save the day. Rather than aggressively forcing the skin to behave differently, like some more intensive treatments do, peptides act more like tiny messengers, sending signals that encourage skin to perform some of the jobs it may have started to neglect. They are like little friends that live in the skin, gently reminding you to drink water and book those dental appointments you have been putting off. These work incredibly well because our skin actually knows what it should be doing; it just sometimes needs a little supportive nudge in the right direction.
And unlike some active ingredients and advanced skin treatments that can cause irritation while delivering results, peptides tend to take a gentler approach, making them fairly well tolerated by everyone.
Do peptides need to be injected?
Part of the reason that peptides have burst onto the scene is because they are no longer confined to the bottles on our skincare shelves. Peptide-based medications are attracting significant attention for their vitality, performance, recovery, and healthy ageing benefits too.
One of the most obvious examples is GLP-1 medications (like Ozempic and Wegovy), which are synthetic peptides designed to mimic naturally occurring hormones in the body that can aid people in weight loss. The rise of these medications, particularly in the social media space, has introduced millions of people to a word that they may not have encountered before.
But while peptide medications work within the body to influence specific biological processes, peptides for the skin work very differently. Instead of targeting appetite, metabolism, or hormone pathways, skincare peptides are designed to communicate with your skin cells, helping support functions such as collagen production, skin repair, hydration, and skin barrier health. So while they do belong to the same family, they are doing two very different jobs.
And, no, you don’t have to inject them! Injectable peptides remain an evolving area of medicine that always needs to be discussed with a qualified healthcare professional. Peptide skincare, on the other hand, remains a very safe and well-researched category in modern beauty.
Why skin experts are obsessed with peptides
If retinol is the world’s skincare overachiever, peptides have become the quietly competent sideline supporter that supports the skin with very little fuss. One of the reasons that skin experts consistently recommend peptides is because they work well for pretty much any skin type. Whether you are dealing with early signs of ageing, dryness, sensitivity, loss of firmness, or simply want to support long-term skin health, peptides can usually earn a place in your routine, and rightfully so.
They also play very nicely with your other ingredient line-up, like vitamin C, hyaluronic acid, niacinamide, and even retinol. So while some skincare ingredients require careful and methodical planning, peptides tend to slot in just about anywhere, making them a very easy active ingredient to introduce into your already established routine.
The past few years of skincare have seen the introduction of some more aggressive products, like exfoliating acids, and while these products do deliver incredible results, they are not always tolerated by some of the more sensitive skin types. This means the outcome is often irritation, redness, sensitivity, and compromised skin barriers at the cost of faster results.
Today, we are seeing a shift towards a more balanced philosophy. Rather than constantly pushing your skin to work harder by introducing as many hard-working actives as possible, the focus should be on how to safely have these hard-working actives supported by some less intensive but equally effective sideliners. And peptides are pretty hard to beat for this.
They are more than just one ingredient
Peptides are not confined to just one ‘type’ of ingredient either; they are actually a category of ingredients, and just like the injectable versions, they all perform slightly different tasks. Some peptides are classified as signal peptides (which are the little messenger types) that support all-important functions like collagen production, which makes them a favourite for those who want anti-ageing skincare properties. Others are carrier peptides, which help deliver essential trace elements that support healthy skin function. These peptides are designed to support skin repair, strengthen the barrier, improve hydration, and help to soften the appearance of expression lines.
This is why you will often see more than one peptide in a single skincare product. Rather than relying on one pathway, modern formulations frequently combine several different peptides to target firmness, elasticity, hydration, and overall skin health simultaneously. Pretty amazing, right?
And one of the best things about peptides in skincare is that they work cumulatively over time, encouraging realistic expectations and results. They are not putting themselves out there to be miracle workers (which you should always be sceptical of in the world of skincare, by the way). These are consistent and hard-working amino acids that will support your skin to improve the more you use them, creating natural and sustainable results.
Now you understand peptides. How do you get them on your face?
At Caci, we're particularly fond of formulas that combine peptides with other hardworking ingredients, allowing you to support collagen production while addressing multiple skin concerns at once.
The good news is that peptides are one of the easiest skincare ingredients to incorporate into your existing routine because they play remarkably well with others. Whether your goal is improving firmness, supporting your skin barrier, tackling dehydration, or softening the appearance of fine lines, there's almost certainly a peptide-powered product that can help you.
Products like Murad's Nutrient-Charged Water Gel deliver a blend of peptides, antioxidants, and minerals to help hydrate and strengthen the skin, while the Cellular Hydration Barrier Repair Cream combines barrier-supporting ingredients with peptides to help replenish moisture and improve resilience. If your concerns are more targeted, the Targeted Wrinkle Corrector and Targeted Eye Depuffer use peptide technology to focus on areas that tend to show signs of ageing first, including expression lines, crow's feet, and loss of firmness around the eyes.
Why peptides are a worthwhile investment
Perhaps that's the real reason peptides have become such a skincare obsession. They're not flashy, they don't promise impossible overnight transformations, and they won't magically erase twenty years of late nights, sun exposure, or questionable life decisions. What they do offer is something arguably more valuable: support. They help your skin function better, recover better, and maintain its strength and resilience as time marches on. In a beauty world increasingly focused on longevity rather than quick fixes, that makes peptides one of the smartest ingredients you can invest in.
So while the wellness world continues debating peptide injections, therapies, and the future of healthy ageing, skincare lovers can feel quietly smug knowing that peptides have been working their magic in moisturisers, serums, and eye creams all along.
Botulinum toxin injections are prescription medicine for the treatment of frown lines , horizontal forehead lines and crow’s feet round the eyes. Botulinum toxin injections have risks and benefits. Ask your doctor if botulinum toxin injection is right for you. If you have side effects, see your doctor. You will need to pay for your botulinum toxin injection and clinic fees will apply. For details on precautions & side effects consult your doctor or go to www.medsafe.govt.nz . Botulinum toxin injections lasts about 4 months and further courses of treatment may be necessary. Should only be administered by trained medical professionals.
