The redness on your face may have a different name than you think. Rosacea, perioral dermatitis, and seborrhoeic dermatitis look similar from a distance — but they occur in different places, feel different, and require different skincare. Here, you’ll learn how to tell them apart.
Why are these three skin conditions so difficult to tell apart?
The difference between rosacea, perioral dermatitis, and seborrhoeic dermatitis lies in their location, sensation, and the skin’s surface. Rosacea causes persistent redness and flushing in the centre of the face. Perioral dermatitis causes small red bumps around the mouth. Seborrhoeic dermatitis causes greasy, yellowish scales around the eyebrows and nostrils.
All three are inflammatory conditions. This means that the skin’s defence system is on high alert and sends extra blood to the area — hence the redness. But the underlying mechanisms differ, which is why the conditions also respond differently to skincare. In fact, the Danish Health Authority’s medical handbook on sundhed.dk states that perioral dermatitis can look so similar to rosacea that visible vessels are often what distinguishes them.
Let’s take them one at a time — focusing on what you can see and feel yourself.
Rosacea — the persistent redness in the centre of the face
What it looks like: Rosacea typically appears symmetrically on the cheeks, nose, forehead, and chin — what is known as the central face. The redness is persistent or appears in distinct flushes, when the face suddenly glows after heat, sun, alcohol, or spicy food. Many people also develop small visible blood vessels (telangiectasias — dilated small vessels that appear as fine red threads) and occasional small red bumps. The skin does not usually flake.
How it feels: Rosacea burns and stings more than it itches. Many describe a warmth in the skin, as if their cheeks are "glowing from within," and the skin reacts easily to creams, wind, and temperature changes. You can read more about subtypes and causes in rosacea.blog's in-depth guide to rosacea.
Who is affected: Most often adults between 30 and 50 with fair skin, and women are affected more frequently than men.
Perioral dermatitis — the small bumps around the mouth
What it looks like: Perioral dermatitis (a rash around the mouth) appears as clusters of small red bumps, often with slightly flaky skin between them. The rash occurs around the mouth, beside the nostrils, and sometimes around the eyes. A classic characteristic: a narrow, pale zone right along the lip line is usually unaffected. Unlike rosacea, there are no visible blood vessels.
How it feels: The skin feels tight and mildly burns, and many people experience a stinging sensation when applying cream. Itching is usually mild. The condition typically flares up after using strong corticosteroid creams, heavy greasy creams, or layering too many products.
Who it affects: Especially women aged 20–45. The comparison with rosacea is so common that rosacea.blog has devoted an entire article to the difference between perioral dermatitis and rosacea.
Seborrheic dermatitis — the greasy, yellowish scales
What it looks like: Seborrheic dermatitis — commonly called dandruff eczema — causes redness covered with greasy, yellowish scales. It appears where the skin produces the most sebum: in the eyebrows, along the folds beside the nostrils, on the scalp (dandruff), at the hairline, and behind the ears. The scales are the key distinguishing feature — neither rosacea nor perioral dermatitis scales in the same greasy way.
How it feels: Dandruff eczema itches — often more than it burns. The skin may feel greasy and irritated at the same time, and the condition typically worsens in winter and during stressful periods. The cause is believed to be an overreaction to Malassezia, a yeast that naturally lives on everyone’s skin.
Who it affects: All ages, with men affected slightly more often than women.
How to tell the difference — an overview in 30 seconds
| Rosacea | Perioral dermatitis | Seborrheic dermatitis | |
|---|---|---|---|
| Location | Cheeks, nose, forehead, chin | Around the mouth, nose and possibly eyes | Eyebrows, folds beside the nose, scalp, behind the ears |
| Appearance | Redness, flushing, visible small blood vessels, possibly bumps | Clusters of small red bumps, pale area around the lips | Redness with greasy, yellowish scales |
| Sensation | Burns, tingles, glows | Feels tight, stings when applying cream | Itches, feels greasy |
| Scaling | Rarely | Light scaling between the bumps | Yes — pronounced and greasy |
| Typical triggers | Sun, heat, alcohol, spicy food | Strong corticosteroid creams, heavy creams | Stress, cold, winter |
Fact box: Rosacea affects around 5% of the adult population, while perioral dermatitis is most common among women aged 20–45. Seborrheic dermatitis is even more widespread — most adults experience it in a mild form as scalp dandruff at some point in their lives.
Calm for unsettled skin
CØLM Redness Relieving Cream combines zinc oxide and sulfur in one soothing night cream for redness and reactive skin.
See CØLM Redness Relieving Cream →That’s why CØLM Redness Relieving Cream can help with all three
Although the three conditions are different, they share one common denominator: inflammation and redness in an imbalanced skin barrier. That is exactly what CØLM Redness Relieving Cream is formulated for.
The cream is based on two well-documented active ingredients. Zinc oxide has a soothing effect and helps reduce visible redness and irritation — it forms a mild, protective layer on the skin. Sulfur has been used in skincare for more than a hundred years and has a documented effect against both Demodex mites (which play a role in rosacea and perioral dermatitis) and the Malassezia yeast involved in seborrheic dermatitis. In other words, the combination targets something central to all three conditions.
CØLM is a night cream and should only be used in the evening on cleansed skin. At night, the skin works to repair itself — and this gives the active ingredients time to work without sun, sweat, and makeup. If you are unsure how CØLM differs from our classic cream, you can read about the difference between CØLM and ZZ-Creme.
How to care for your skin while you figure it out
Regardless of which of the three conditions best matches your skin, the same basic principles apply. Reactive skin needs fewer products, not more.
Morning: Cleanse with a mild, gentle cleanser such as Mild Foaming Facial Cleanser with Osmolyte — it protects your skin’s moisture balance instead of stressing it. Finish with sun protection, especially if you lean toward rosacea, where sun is the most common trigger.
Evening: Cleanse again, then apply a thin layer of CØLM Redness Relieving Cream to the areas that are red and irritated. The lightweight texture also makes it suitable for skin that does not tolerate heavy, rich creams — which is important in cases of perioral dermatitis.
In the meantime: Avoid scrubs, strong acids, and fragranced products until your skin has calmed down. Also resist the temptation to cover the redness with more layers of products — this often prolongs the problem. If you are unsure what is causing your redness in the first place, we also have a guide to the 6 most common causes of facial redness.
When should you seek medical help?
Good skincare can alleviate symptoms, but some situations require medical attention. See a doctor if the rash spreads quickly or is painful, if you develop bumps or redness around the eyes, if you have used a corticosteroid cream on your face and the rash flares up when you stop, or if the redness affects your eyes with dryness and stinging (this may be ocular rosacea). The same applies if nothing has helped after 6–8 weeks of consistent, gentle care. A dermatologist can provide a reliable diagnosis — and the earlier, the better.
FAQ — frequently asked questions
How do I know whether I have rosacea or perioral dermatitis?
Look at the location and the blood vessels. Rosacea occurs in the center of the face — cheeks, nose, and forehead — and often causes visible small blood vessels and flushing. Perioral dermatitis occurs around the mouth in clusters of small bumps, typically with a pale zone right next to the lips, and without visible blood vessels.
Can you have several of the conditions at the same time?
Yes. Rosacea and seborrheic dermatitis often occur together because both are common and affect the face. If you have persistent redness on your cheeks and greasy scales in your eyebrows, it may well be two conditions at once. A dermatologist can distinguish between them.
Does rosacea itch?
Rarely. Rosacea burns, tingles, and glows more than it itches. Pronounced itching points more toward seborrheic dermatitis or another form of eczema. The sensation in your skin is therefore one of the best guides when distinguishing between them.
Does perioral dermatitis go away on its own?
It can subside over weeks to months if you remove what triggered it — typically corticosteroid cream or heavy products — and simplify your routine. But without changes, it often persists or returns. Gentle, minimal care is the way forward.
What is the difference between seborrheic dermatitis and dandruff eczema?
No — they are two names for the same condition. Seborrheic dermatitis is the medical term; dandruff eczema is the everyday Danish term. Mild seborrheic dermatitis on the scalp is what most people know as ordinary dandruff.
Can CØLM Redness Relieving Cream be used for all three conditions?
Yes. The combination of zinc oxide and sulfur is relevant for rosacea, perioral dermatitis, and seborrheic dermatitis because it reduces redness and affects both Demodex mites and Malassezia yeast. The cream is used only in the evening on cleansed skin.
Whatever the name of your redness
Zinc oxide and sulfur work overnight while your skin repairs itself. Try CØLM — with a skin improvement guarantee.
Try CØLM tonight →References
- Lægehåndbogen, sundhed.dk — Perioral dermatitis. Sundhed.dk.
- Tucker D, Masood S — Seborrheic Dermatitis. StatPearls, NCBI Bookshelf.
- British Association of Dermatologists — Seborrhoeic Dermatitis — Patient Information Leaflet. BAD.
- Searle T, et al. — Periorificial dermatitis: Pathophysiology, diagnosis, and management (2025). Journal of the American Academy of Dermatology.
- DermNet — Rosacea. DermNet NZ.
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