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Choosing a face serum: a practical guide to hydration, glow and a more even-looking complexion

A face serum can be a targeted addition to your daily routine. However, it’s best not to rely solely on words such as “glow”, “detox” or “intensive repair”. The right choice depends mainly on your skin type, the ingredients and how easily the product fits into your routine.

K-beauty serums in particular often feature several active ingredients on the same label. That may sound appealing, but it can be tricky if your skin is quick to react or you already use several products.

Three pitfalls to avoid when buying a face serum

1. A high percentage doesn’t tell you everything

A niacinamide serum with 10 or 15 per cent sounds powerful, but a higher concentration isn’t automatically a better choice. If you have sensitive skin, a simple formula with hydrating ingredients may be more practical. So check for glycerine, panthenol, hyaluronic acid, ceramides and other ingredients too.

2. Marketing claims are sometimes presented as results

A serum for dark spots or a brightening serum may be described as helping to create a more even-looking complexion. That doesn’t mean everyone will see the same results. Claims about collagen, cell renewal or reducing dark spots, for example, should be understood as product or brand claims, not guaranteed effects.

A brand’s own research may show that a formula offers certain cosmetic benefits. Also check the official ingredients list and directions for use on the packaging.

3. Using too many active products at once

A serum containing azelaic acid, niacinamide, vitamin C or exfoliating acids may be useful as part of a targeted routine. However, don’t introduce several new active formulas at once. Add one product at a time, and if you have sensitive skin, start by testing a small amount on a small area.

Which details should you check?

1. Ingredients that suit your goals

Start by choosing your main skincare goal:

  • Hydration: look for glycerine, sodium hyaluronate, hyaluronic acid, panthenol and betaine. A hydrating serum, such as a hyaluronic acid serum, is often a good fit if your skin feels tight or dry.
  • Dull skin and an uneven-looking complexion: niacinamide, alpha-arbutin, tranexamic acid and vitamin C derivatives are often found in brightening serums.
  • Dark spots and discolouration: look for alpha-arbutin, tranexamic acid, kojic acid or niacinamide. A serum for dark spots is only effective as part of a consistent routine that includes daily sun protection.
  • Redness or unsettled skin: azelaic acid, centella asiatica, panthenol and allantoin are ingredients to consider. An azelaic acid serum may feel more intensive, so it’s important to build up use gradually.
  • Dryness and a less supple appearance: a gel serum with ginseng, snail mucin, hyaluronic acid or adenosine may suit a routine focused on hydration and comfort.

An anti-ageing serum is a cosmetic product category. Don’t expect a guaranteed reduction in wrinkles; focus instead on the texture, ingredients and ease of use.

2. Concentration and formula

Check whether the concentration is clearly stated. For example, the Beauty of Joseon Glow Deep Serum lists 2% alpha-arbutin, alongside rice bran water, glycerine and niacinamide. The Anua Niacinamide 10% + TXA 4% lists 10% niacinamide and 4% tranexamic acid.

A light lotion or gel usually absorbs quickly. A richer formula may feel more comfortable on dry skin, but less suitable under sun cream or make-up. Sizes also vary: many serums contain 30 ml, while some products contain 50 or 55 ml.

3. Directions for use and skin safety

Serum is generally applied after cleansing, and after toner if you use one, before moisturiser. If your routine contains ingredients that may increase sensitivity to sunlight, use sun cream during the day. Avoid contact with your eyes and always follow the label.

Check the expiry date and the period after opening too. For example, the packaging may show a symbol such as 12M. Stop using the product if irritation persists, and seek medical advice if you have severe or recurring skin concerns.

Recommended face serums for different users

Suitable for: Budget-conscious beginners
Embryolisse Hydra Serum 30 ml

Embryolisse Hydra Serum 30 ml

Why it suits this profile: A straightforward choice if you mainly want to add extra hydration without complicating your routine. The product information says the formula is suitable for all skin types, including sensitive skin.

How this product avoids the pitfall

The product description focuses on hydration rather than a long list of intensive active ingredients.

Key benefit & highlights

Contains sodium hyaluronate and glycerine; 30 ml glass bottle; the product information describes a light, fast-absorbing texture.

Suitable for: Shoppers looking for premium quality
Beauty of Joseon Revive Serum Ginseng Snail Mucin 30 ml

Beauty of Joseon Revive Serum: Ginseng + Snail Mucin 30 ml

Why it suits this profile: A good fit for K-beauty fans who want to combine hydration and a supple skin feel with a gel texture.

How this product avoids the pitfall

The ingredients and directions for use are clearly listed, so you can decide whether snail mucin suits your preferences.

Key benefit & highlights

Contains 3% snail secretion filtrate, ginseng root water, sodium hyaluronate and centella asiatica; 30 ml pump bottle.

Suitable for: Targeted use & experienced users
ANUA Azelaic Acid 10 Hyaluron Redness Soothing Serum 30 ml

ANUA Azelaic Acid 10 Hyaluron Redness Soothing Serum 30 ml

Why it suits this profile: For shoppers deliberately looking for a serum for acne-prone skin, visible redness or an uneven-looking complexion, and who can build up their routine step by step.

How this product avoids the pitfall

The instructions recommend starting with 1 to 2 drops, once or twice a week. This helps you avoid using too many active skincare products too soon.

Key benefit & highlights

Lists 10% azelaic acid, panthenol, allantoin, ceramide NP and hyaluronic acid; includes a clear warning about building up use and sun protection.

Suitable for: Fans of a more even-looking complexion
Beauty Of Joseon Glow Deep Serum Rice Arbutin 30 ml

Beauty Of Joseon Glow Deep Serum Rice + Arbutin 30 ml

Why it suits this profile: A lightweight option if you’re looking for a serum for dark spots or dullness and like rice-based K-beauty formulas.

How this product avoids the pitfall

The formula lists the percentage of alpha-arbutin and, according to the product information, contains no fragrance or alcohol.

Key benefit & highlights

Contains 68,6% rice bran water, 2% alpha-arbutin, niacinamide and glycerine; 30 ml and intended for evening use according to the product description.

Looking for more options?

We’ve put together a complete, up-to-date list of products that meet these strict selection criteria and current European safety regulations.

Frequently asked questions about face serums

When should you apply a face serum?

Apply serum after cleansing and before moisturiser. Keep your routine simple: cleanser, serum, cream and sun cream during the day. If you’re using active ingredients, always follow the specific directions on the label.

How long does a face serum last?

Check the expiry date and the period-after-opening symbol. Keep the product closed, in a cool place and out of direct sunlight. Has the scent, colour or texture changed? Don’t use it, and check the packaging.

Which serum is right for sensitive skin?

If possible, choose a formula with a limited number of active ingredients and hydrating ingredients such as glycerine, panthenol or hyaluronic acid. Introduce a serum for sensitive skin gradually. Test a small amount first and stop using it if irritation occurs.