Joybuy Insights

Serum for blemishes and large pores: how to choose a formula that suits your skin

A serum for blemishes and large pores sounds straightforward, but the differences between formulas are significant. Oily skin often benefits from a lightweight texture and ingredients that help reduce visible shine. Sensitive or acne-prone skin, on the other hand, calls for a gentle approach, plenty of hydration and careful consideration of potential irritation.

Marketing doesn't always make the choice any clearer. So don't just look at words like "pore minimising" or "clarifying" – focus on the ingredients list, usage instructions and suitability for your skin type.

Three common pitfalls when buying

1. A high concentration doesn't automatically mean a better choice

A niacinamide serum with 10% sounds appealing, but a concentrated formula can cause stinging or redness for some users. The same goes for an azelaic acid serum or an exfoliating serum with AHA, BHA and PHA.

Start with active ingredients at a low frequency of use. That way, you can see how your skin reacts before using the product daily.

2. Large pores don't literally disappear

A pore-refining serum can make pores look less noticeable, either temporarily or gradually, by hydrating the skin, limiting shine or smoothing the texture. Pores cannot be permanently "closed". So be wary of product claims that suggest a lasting change.

3. A matte finish can come at the cost of comfort

A face serum for oily skin doesn't have to be drying. When your skin feels tight, make-up can sit less smoothly and dry patches can become more visible. Look for a combination of sebum-regulating ingredients and hydrating agents, such as glycerine, panthenol, hyaluronic acid or sodium hyaluronate.

Key points to check on the label

Niacinamide for shine, texture and an even complexion

Niacinamide is commonly used in a serum for spots, a serum for an even skin tone and products for oily or combination skin. The Ordinary Niacinamide 10% + Zinc 1% contains, according to the product information, 10% niacinamide and a zinc salt designed to help balance visible aspects of sebum activity.

Always check the full packaging though. The product information states that this formula may be better applied at a different time of day if you are using certain vitamin C formulas.

Azelaic acid for an uneven complexion

An azelaic acid serum can be a good option if you want to tackle not only blemishes but also visible redness or leftover marks. The SKIN1004 Madagascar Centella Azelaic Acid 10 Ampoule contains, according to the label, 10% azelaic acid and centella extract. The manufacturer advises building up gradually and using sun protection during the day.

A slight tingling sensation may occur with the first few applications, according to the product information. Do not use the product on damaged, irritated or sunburnt skin, and stop if irritation persists.

Exfoliating acids: check the combination

A formula with AHA, BHA and PHA can be appealing for rough skin texture and clogged pores. Medicube Zero Pore One Day Serum lists a combination of 15.2% AHA+BHA+PHA and niacinamide. Some By Mi AHA.BHA.PHA 30 Days Miracle Serum also contains multiple acids as well as fragrance-like components and essential oils according to the ingredients list.

Don't automatically use such formulas alongside other strong exfoliants. Test on a small area first and use sun protection during the day. A serum for acne-prone skin is a cosmetic skincare product and does not replace medical advice.

Texture, volume and shelf life

Pay attention to the practical details:

  • Watery or gel-like texture: often comfortable under sunscreen and make-up.
  • Oil-free formula: can suit those who get shiny quickly, but on its own doesn't say anything about tolerance.
  • Volume: compare 30 ml, 50 ml and 100 ml based on the recommended amount and frequency of use.
  • Shelf life: check the expiry date and the period-after-opening symbol on the packaging.
  • Fragrances and alcohol: may be less suitable for some sensitive skin types. So look at the INCI list, not just the front of the packaging.

Our recommendations by skin profile

Suitable for: Budget-conscious beginners
The Ordinary Niacinamide 10% + Zinc 1% 30 ml

The Ordinary Niacinamide 10% + Zinc 1% 30 ml

Why this suits the profile: The formula has a short, clearly stated active base, making it straightforward for anyone trying a niacinamide serum for the first time.

How this product avoids the pitfall

The product information states the concentrations, so you're not relying on a vague claim about pores or shine.

Key benefit & highlights

10% niacinamide, 1% zinc and suitable according to the product information for oily, combination and blemish-prone skin, among others.

Suitable for: Shoppers seeking top quality
SKII SK-II Skinpower Essence - Pore Minimizing Serum 75ml

SKII SK-II Skinpower Essence - Pore Minimizing Serum 75ml

Why this suits the profile: The larger volume and lightweight essence texture fit a comprehensive daily routine focused on hydration and skin texture.

How this product avoids the pitfall

The description mentions Pitera, glycerine and use after cleansing and toning; check the full ingredients list on the packaging.

Key benefit & highlights

75 ml volume and a formula that, according to the product description, targets moisture balance and a more refined-looking skin texture.

Suitable for: Targeted use & intensive users
Medicube Zero Pore One Day Serum

Medicube Zero Pore One Day Serum

Why this suits the profile: Suitable for users who are deliberately looking for an exfoliating Korean skincare serum formula and can build up their routine carefully.

How this product avoids the pitfall

The stated combination of AHA, BHA and PHA makes it clear that you shouldn't layer multiple exfoliants at the same time.

Key benefit & highlights

15.2% AHA+BHA+PHA according to the product description and the addition of niacinamide for a routine focused on texture and visible pores.

Suitable for: Sensitive skin with visible redness
SKIN1004 Azelaic Acid 10% Ampoule

SKIN1004 Azelaic Acid 10% Ampoule

Why this suits the profile: According to the product description, the formula combines azelaic acid with centella and light hydration, without niacinamide.

How this product avoids the pitfall

The usage instructions advise starting every other day; this prevents you from using an active formula too frequently straight away.

Key benefit & highlights

10% azelaic acid, centella extract and a niacinamide-free formula according to the product information.

Looking for more options?

We've put together a full, up-to-date list of products that fully meet these strict selection criteria and comply with current European safety regulations.

How to use a serum in your routine

  1. Cleanse your face with a gentle cleanser and pat your skin dry.
  2. Apply one to a few drops, depending on the label instructions.
  3. Use a hydrating serum or moisturiser if your skin feels tight.
  4. Apply sun protection in the morning, especially when using acids or azelaic acid.
  5. Don't add several new active products at the same time. That way, you can better identify which product is causing a reaction.

Frequently asked questions

How long does it take for a serum for blemishes to show visible results?

This varies depending on the formula, skin type and frequency of use. Give a new product a few weeks to assess your skin's appearance, unless irritation occurs. Stop if you experience persistent redness, itching or a burning sensation.

Can I use niacinamide and azelaic acid together?

It can be done within some routines, but it's wiser to introduce new active ingredients separately. Start by using them every other day and stick with a simple moisturiser. Always check the specific usage instructions and ingredients list.

How long does a serum last after opening?

Look for the symbol showing, for example, 6M or 12M, and check the expiry date on the packaging. Store the serum in a cool, dry place, close the bottle properly and don't leave it in direct sunlight for long periods.