If you've been scrolling skincare content lately, you've probably noticed one word showing up everywhere: peptides.

From Rhode to your local pharmacy shelf, peptides are having a serious moment. But if you've ever wondered what they actually are — and whether they're worth the hype — you're in the right place.

Let's break it down simply.

So, What Actually Are Peptides?

Peptides are short chains of amino acids — the building blocks of protein. In skincare, they're used because your skin naturally produces proteins like collagen, elastin and keratin that keep it firm, smooth and resilient. As we age (or when our barrier gets damaged), production of these proteins slows down.

Peptides work by signalling to your skin to produce more of what it's losing. Think of them as tiny messengers that tap your skin on the shoulder and say "hey, we need more collagen over here."

Because they're small molecules, they can penetrate the skin effectively and get to work where it counts.

Not All Peptides Do The Same Thing

This is where it gets interesting — and where a lot of skincare marketing glosses over the details.

There are several different types of peptides, each with a distinct function:

Signal peptides tell the skin to produce more collagen and elastin. These are the ones most associated with anti-ageing and firming.

Carrier peptides deliver trace minerals like copper to the skin to support wound healing and collagen synthesis.

Enzyme-inhibiting peptides slow down the breakdown of collagen — essentially protecting what you already have.

Anti-inflammatory peptides calm sensitised skin at a cellular level. This is the category that matters most for reactive, damaged or barrier-compromised skin.

The Peptide That's In Our Soak

At All For Sundays, we use Neutrazen™ (Palmitoyl Tripeptide-8) — a clinically studied anti-inflammatory peptide that works differently to most of the peptides trending on your feed.

Rather than focusing on firming or anti-ageing, Neutrazen™ targets sensitivity at its source. It works by helping to maintain a normal sensitivity threshold in the skin — calming the inflammatory response that causes redness, reactivity and that tight, uncomfortable feeling after exposure to irritants.

It doesn't just soothe on the surface. It works at a cellular level, which means the results are genuine rather than temporary.

We chose this peptide specifically because our customers aren't just looking for younger-looking skin — they're looking for skin that feels calm, comfortable and resilient every single day. Neutrazen™ delivers that.

Why Peptides Work So Well For Barrier-Compromised Skin

If you've ever damaged your skin barrier with harsh actives — over-exfoliating, using high-strength retinols, or layering too many acids — you'll know that the recovery process can feel endless.

Peptides are one of the few ingredients that support the repair process without adding any additional stress to the skin. They're:

• Non-irritating — no tingling, no purging, no adjustment period

• Compatible with almost every other ingredient — no conflict with niacinamide, hyaluronic acid, or ceramides

• Suitable for daily use — no need to cycle on and off

• Effective at low concentrations — which means you don't need a high percentage to see results

This makes them ideal for anyone with sensitive, reactive or dehydrated skin who still wants to treat their skin — not just moisturise it.

The Peptide Trend Isn't Going Anywhere

The reason peptides have gone from a niche ingredient to a mainstream staple is simple: they work, and they don't cause drama.

In an era where more and more people are realising that aggressive skincare routines have left their barriers wrecked, peptides represent a smarter approach. Results without the damage.

At All For Sundays, that philosophy is baked into everything we make. Our Peptide Soothing Soak pairs Neutrazen™ with 5% niacinamide, four molecular weights of hyaluronic acid, and micro-dosed alpha arbutin — a complete treatment step that preps and treats in one go, without ever compromising your barrier.

Shop the Peptide Soothing Soak →

All For Sundays is an Australian barrier-first skincare brand, founded by a qualified beauty therapist with over a decade of experience. Every product is formulated to treat the skin without disrupting the barrier — because results shouldn't come at a cost.