The Science Behind Rosacea
- Jul 7
- 4 min read
Why your skin flushes and what you can do about it
Rosacea affects around 1 in 10 people in the UK, yet it's still widely misunderstood. If your face regularly becomes red, hot or flushed, or you develop acne-like bumps that don't behave like acne, you may be dealing with rosacea.
For many years, rosacea was simply labelled as "sensitive skin." Thankfully, research has moved on. We now know that rosacea is a chronic inflammatory skin condition caused by a combination of factors, including an overactive immune response, a weakened skin barrier, changes in the skin microbiome and over-reactive blood vessels.
So, is it caused by skin mites?
You may have heard about the Demodex mite. These microscopic mites naturally live on everyone's skin and are completely normal.
However, studies have shown that many people with rosacea have higher numbers of Demodex mites, or their immune system reacts much more strongly to them. The mites themselves aren't thought to be the root cause of rosacea, but they can contribute to ongoing inflammation in some people.
In other words, it's not about having the mites, it's about how your skin responds to them.
The skin barrier, your body's natural shield
Think of your skin barrier as a brick wall.
The skin cells are the bricks, while natural fats called lipids and ceramides are the mortar holding everything together.
When this barrier becomes damaged, moisture escapes more easily and irritants can penetrate the skin. The result?
Redness
Burning or stinging
Dryness and dehydration
Increased sensitivity
More frequent flare-ups
One of the most important goals in managing rosacea is repairing and protecting this barrier.
The gut–skin connection
One of the most exciting areas of research is the relationship between gut health and skin health.
Scientists have discovered that some people with rosacea have changes in the balance of bacteria living in their digestive system. Although research is ongoing, it appears that inflammation within the gut may influence inflammation within the skin.
This doesn't mean gut health causes rosacea, but supporting your digestive health through a balanced diet may help reduce overall inflammation in the body.
Simple habits that support both your gut and your skin include:
Eating a wide variety of vegetables, fruits, herbs, nuts and seeds.
Including healthy omega-3 fats from oily fish.
Choosing fibre-rich foods to nourish your gut microbiome.
Drinking enough water throughout the day.
Ingredients that can help calm rosacea
When choosing skincare, the aim is to calm inflammation, strengthen the skin barrier and protect the skin from irritation.
Look for products containing:
✔️ Niacinamide – helps reduce redness and strengthen the skin barrier.
✔️ Ceramides – replace the skin's natural protective lipids.
✔️ Hyaluronic Acid – provides long-lasting hydration.
✔️ Panthenol (Vitamin B5) – calms irritated skin.
✔️ Glycerin – helps maintain moisture levels.
✔️ Azelaic Acid – one of the best researched ingredients for reducing redness and inflammation associated with rosacea.
Ingredients that may make rosacea worse
Everyone's skin is different, but many people find these trigger irritation:
Fragranced skincare
Essential oils
Alcohol denat. (when high on the ingredient list)
Harsh exfoliating scrubs
Overusing acids or retinol
Strong foaming cleansers
Very hot water
How I can help
At Beauty & Holistics with Vicky, every facial begins with a thorough skin consultation.
For clients with rosacea or sensitive skin, I often choose products from the Cliniccare PURE range, which contains ingredients such as niacinamide and low molecular weight hyaluronic acid to help calm inflammation and support the skin barrier. In clinic, the Cliniccare PURE Peel also contains azelaic acid, one of the most evidence-based ingredients used to help reduce redness and inflammation.
Treatment plans are always personalised, because no two rosacea sufferers have exactly the same triggers.
💡 Did You Know?
People with rosacea often flush because the tiny blood vessels in their face are more reactive than normal. Heat, sunlight, spicy foods, alcohol, emotional stress and even hot drinks can cause them to widen, making the skin appear redder.
🥗 Inside-Out Tip
Your skin reflects what's happening inside your body.
Aim to eat 30 different plant foods each week. Variety helps feed your gut microbiome, which plays an important role in supporting your immune system and may influence inflammation throughout the body. Healthy fats such as extra virgin olive oil, walnuts, flaxseeds and oily fish also help support healthy skin.
✨ Treatment Spotlight
LED Light Therapy
LED light therapy is a gentle, non-invasive treatment that can help calm inflammation, support skin healing and strengthen the skin's natural repair processes. It's an excellent addition to many treatment plans for sensitive and rosacea-prone skin.
🧴 Homecare Hero
Cliniccare PURE Serum
One of my favourite products for sensitive and rosacea-prone skin. It contains niacinamide to help calm redness, together with low molecular weight hyaluronic acid for deep hydration and barrier support.
❤️ Vicky's Tip
If your face feels hot or flushed, avoid putting ice directly onto your skin. Instead, cool the skin gently with a damp, cool cloth or a thermal water mist kept in the fridge. It's kinder to your skin and helps reduce the risk of further irritation.
If you're struggling with redness, flushing or sensitive skin, book a consultation and let's work together to create a skincare plan that's tailored specifically to your skin.
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