Sensitive Skin: Triggers & How to Calm It
What triggers reactive skin — and how to build a calmer, gentler routine
Reviewed by Kate · Last updated 20 Aug 2026
Signs Your Skin Is Sensitised
Sensitivity isn't a fixed trait — it's a state your skin can move in and out of. It shows up as stinging, burning, redness or itching in response to products, weather or touch, and it almost always points to one thing: a barrier that isn't doing its protective job as well as it should.
What's Actually Happening: Barrier Dysfunction and Reactivity
A healthy skin barrier keeps irritants, allergens and unwanted moisture loss in check. When that barrier is compromised — whether through genetics, over-exfoliation or environmental stress — nerve endings in the skin become more exposed and more easily triggered. This heightened nerve reactivity is why sensitised skin can sting from a product that never used to bother it, or flush at the first sign of wind or heat.
Sensitivity can be a lasting trait, often linked to rosacea, eczema or naturally thin skin, or it can be a temporary, product-induced state — sometimes called sensitised skin — where the barrier has been disrupted and needs support to settle again.
A longer-term tendency, often linked to rosacea, eczema or naturally thin skin. Reactivity is part of your baseline.
A temporary, product- or environment-induced state. The barrier has been disrupted and can settle again with support.
What Triggers a Reaction
Product ingredients
Fragrance, denatured alcohol, essential oils and certain preservatives are frequent irritants for reactive skin.
Over-exfoliation
Stacking acids, retinoids and physical scrubs faster than skin can recover strips the barrier and lowers its threshold.
Environmental factors
UV exposure, pollution, wind and extreme temperatures all place stress on already-compromised skin.
Internal factors
Stress, hormonal shifts, poor sleep and certain medications can lower your skin's reaction threshold.
Best Ingredients for Sensitive Skin
These are the soothing, barrier-supporting actives worth looking for. There's no need for an exhaustive list — just fewer, gentler products used consistently, chosen because they comfort reactive skin rather than challenge it.
Ceramides
Help replenish the lipids that hold the barrier together, supporting reactive, compromised skin.
Niacinamide
Supports the barrier and is associated with calmer, less reactive skin; introduce at a low percentage.
Centella Asiatica
A well-loved botanical that may help comfort and calm the look of irritated skin.
Panthenol
Provitamin B5 that supports hydration and helps skin feel soft and comfortable.
Colloidal Oatmeal
Long associated with soothing itchy, sensitised skin and buffering it against irritants.
Hyaluronic Acid
Draws water into the upper skin to plump and hydrate without adding heavy actives.
Allantoin
A gentle conditioning agent that supports comfort on easily-irritated skin.
Squalane
A lightweight, well-tolerated emollient that helps soften skin and reduce moisture loss.
How to Calm and Support It
The priority with reactive skin is reducing the load on the barrier while it settles, not adding more actives to compensate.
- Simplify your routine — fewer products means fewer chances for a reaction; strip back to cleanser, moisturiser and SPF while skin recovers.
- Patch-test everything new — apply to the inner arm for a few days before it goes anywhere near your face.
- Choose soothing, barrier-supporting actives — ingredients that comfort reactive skin without adding fragrance or heavy actives.
- Protect daily — a mineral sunscreen is generally better tolerated than a chemical filter on reactive skin.
- Reintroduce slowly — bring products back one at a time, waiting a couple of weeks before adding the next.
Our Key Ingredients guide above highlights the soothing, barrier-supporting actives worth looking for — no need for an exhaustive list, just fewer, gentler products used consistently.
A Gentle, Barrier-First Routine
Morning
- Rinse with lukewarm water, or use a gentle, fragrance-free cleanser
- Optional soothing serum (niacinamide or centella)
- Barrier-supporting moisturiser
- Mineral SPF 30+ (zinc oxide is well tolerated)
Evening
- Gentle, non-foaming cleanser or micellar water
- Comforting hydrating serum (panthenol or hyaluronic acid)
- Rich, calming moisturiser to seal in hydration
Caring for Sensitive Skin Day-to-Day
Wondering if it's your skin type? If your skin only reacts now and then, this may be a passing concern rather than your type — learn to identify and care for a sensitive skin type →.
Frequently Asked Questions
Is sensitive skin the same as sensitised skin?
Not quite. Sensitive skin is a longer-term tendency, often linked to rosacea, eczema or naturally thin skin. Sensitised skin is a temporary state where the barrier has been disrupted — usually by products or the environment — and can settle again with support. Our sensitised vs sensitive skin guide helps you tell which one you have.
Why has my skin suddenly become sensitive?
A sudden change is usually a sign the barrier has been disrupted — often by over-exfoliation, a new active, fragrance, or a spell of cold, dry or windy weather. Simplifying your routine and letting skin settle is the first step. There's more on this in why is my skin suddenly sensitive?
Which ingredients should I avoid?
Fragrance, denatured alcohol, essential oils and certain preservatives are the most frequent culprits. It also helps to pause strong acids and high-strength retinoids while skin is reactive, and to avoid layering several new actives at once.
Can I still use active ingredients like retinol or acids?
Often yes, once skin has calmed — but reintroduce them slowly, one at a time, a couple of weeks apart, and always patch-test first. If a product stings or causes redness that lingers, pause it and let the barrier recover.
How long does it take for sensitised skin to calm down?
With a stripped-back, barrier-first routine, many people notice their skin feeling more comfortable within a few weeks. Consistency matters more than any single product. Our how to calm sensitive skin guide sets out a step-by-step approach.
Does a damaged barrier cause sensitivity?
A compromised barrier is closely associated with reactivity — when it can't hold moisture and keep irritants out, nerve endings become more easily triggered. Supporting the barrier is usually the structural fix behind lasting calm. See repair your skin barrier for the detail.
Sensitive skin guides
- Why is my skin suddenly sensitive? — the common triggers and what to do first.
- Sensitised vs sensitive skin — how to tell which one you have.
- How to calm sensitive skin — a barrier-first, step-by-step routine.
- Repair your skin barrier — the structural fix behind lasting calm.
In this guide
Short, practical reads on Sensitive Skin: Triggers & How to Calm It — tap any topic for the full guide.
Why Is My Skin Suddenly Sensitive?
Skin gone reactive out of nowhere? The common triggers behind sudden sensitivity, what to do first, and when redness or pain to the touch means seeing your GP.
Read the guide
Sensitised vs Sensitive Skin: What's the Difference?
Innate sensitive skin is a lasting trait; sensitised skin is a temporary, triggered state. How to tell which you have — and why it changes what you do next.
Read the guide
How to Calm Sensitive Skin: A Barrier-First Routine
A gentle, barrier-first routine to calm sensitive, reactive skin: strip back, patch-test, use soothing ingredients, protect with SPF and reintroduce actives slowly.
Read the guide
The Skin Barrier: What It Is, Why It Breaks Down, and How to Fix It
Your skin barrier is mentioned in almost every skincare conversation — but it's rarely explained clearly. Understanding what it actually is, what damages it, and what genuinely helps it recover can transform the way you approach your routine.
Read the guideKey Ingredients for Sensitive Skin: Triggers & How to Calm It
The actives most worth knowing for this concern — tap any to read the full ingredient guide.
Not sure where to start?
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