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Choosing a face serum: how to find a formula that suits your skin

A face serum can be a practical addition to your daily skincare routine. Its texture is usually lightweight, and serums often contain targeted ingredients such as niacinamide, hyaluronic acid, vitamin C or peptides. However, an expensive bottle is not automatically the right choice. Marketing claims also do not always indicate how well a formula will suit your skin.

Common pitfalls when buying a serum

1. Mistaking a long ingredients list for a better formula

A serum containing lots of active ingredients may seem appealing, but using several actives can make your routine unnecessarily complicated. For example, a vitamin C serum with niacinamide, tranexamic acid, alpha-arbutin and acids requires extra care when introducing it and monitoring how your skin reacts. So do not look only at the number of ingredients. Pay particular attention to:

  • the first five to ten ingredients on the INCI list;
  • the presence of fragrance, alcohol or essential oils if your skin is sensitive to them;
  • the recommended frequency of use;
  • warnings about sun sensitivity.

2. Treating a marketing claim as a guaranteed result

Words such as “glow”, “firming” or “dark spot correcting” describe how a product is positioned, not a guaranteed outcome. A brand’s own research may suggest that certain ingredients can contribute to a visible effect, but this is not a fixed result for every user. Pigmentation, acne and fine lines can have different causes. A cosmetic serum is not a substitute for medical advice.

3. Using a formula that is too strong every day from the outset

A retinol serum, retinal serum or highly concentrated niacinamide serum may not be suitable for immediate use twice a day. With active formulas, start with a small amount and use them infrequently. Stop if irritation persists and always check the product packaging.

Which features should you check?

1. Start by choosing your skincare goal

Match the serum to one main need:

  • Dry or tight-feeling skin: a hydrating serum containing glycerine, panthenol, beta-glucan or hyaluronic acid.
  • Sensitive or reactive skin: a serum for sensitive skin without fragrance and with a short, easy-to-understand ingredients list.
  • Dull complexion or pigmentation: a vitamin C serum, niacinamide serum, alpha-arbutin or tranexamic acid.
  • Blemish-prone skin: niacinamide, propolis or Centella asiatica may be found in formulas for oily or acne-prone skin. “Serum for acne and scars” is a search term; do not expect a guaranteed treatment.
  • Fine lines and loss of firmness: a peptide serum, bakuchiol serum, retinol serum or retinal formula. These ingredients require careful use.

2. Consider both concentration and combination

A percentage is only useful when you also assess the rest of the formula. For example, Anua lists 10% niacinamide and 4% tranexamic acid. According to its ingredients list, Beauty of Joseon Glow Deep Serum contains 2% alpha-arbutin. Dr. Althea Vitamin C Boosting Serum lists, among other ingredients, 3-O-ethyl ascorbic acid, ascorbic acid, niacinamide and sodium hyaluronate.

These are verifiable product specifications, but they do not predict exactly how your skin will react. As a rule, avoid combining several strong exfoliating or retinoid products without a clear reason.

3. Check the packaging, quantity and directions

A 20 or 30 ml dropper bottle is not the same as a 150 ml booster. Check:

  • net contents and recommended dosage;
  • the expiry date and the period after opening, for example 12M;
  • storage instructions, particularly for vitamin C, retinal and retinol;
  • contact with the eyes and use on damaged skin;
  • whether the product contains fragrance if you want to avoid it.

Serum is usually applied after cleansing and, if desired, toner, followed by a moisturiser. During the day, vitamin C, retinal and retinol should be used alongside a sunscreen offering suitable protection.

Recommendations by user profile

Suitable for: Budget-conscious beginners
SKIN1004 Madagascar Centella Ampoule 55 ml

SKIN1004 Madagascar Centella Ampoule 55 ml

Why it suits this profile: This simple Centella ampoule is suitable as a first step if your main priorities are hydration and a comfortable routine.

How this product avoids the pitfall

The product description focuses on Centella asiatica and moisture, without a long list of strong exfoliating actives.

Main benefit & highlights

55 ml; lightweight ampoule texture; designed to provide moisture and a soothing skin feel according to the product description.

Suitable for: Shoppers looking for premium quality
Torriden DIVE IN Low Molecule Hyaluronic Acid Serum 50ml

Torriden DIVE IN Low Molecule Hyaluronic Acid Serum 50ml

Why it suits this profile: If you want to build a comprehensive K-beauty serum routine, this formula contains several forms of hyaluronic acid alongside additional moisture-binding ingredients.

How this product avoids the pitfall

The product information clearly lists five types of hyaluronic acid and a fragrance-free formula, making it easier to compare your options.

Main benefit & highlights

50 ml; fragrance-free and vegan according to the product information; contains panthenol, ceramide NP and beta-glucan.

Suitable for: Targeted use & intensive users
celimax THE VITA-A RETINAL SHOT TIGHTENING BOOSTER 15ml

celimax THE VITA-A RETINAL SHOT TIGHTENING BOOSTER 15ml

Why it suits this profile: This is a targeted choice for users who deliberately want to incorporate a retinal formula into their evening routine.

How this product avoids the pitfall

The instructions specify 0,1% retinal, a small amount and use every other day when starting. This gives you a clear way to build up gradually.

Main benefit & highlights

0,1% retinal; 3% Matrixyl 3000 according to the product description; night-time use and sun protection are explicitly mentioned.

Suitable for: Targeted care for pigmentation
ANUA NIACINAMIDE 10% + TXA 4% SERUM 30ml

ANUA NIACINAMIDE 10% + TXA 4% SERUM 30ml

Why it suits this profile: A logical option if you are specifically looking for a serum for pigmentation or post-acne marks and want to compare concentrations.

How this product avoids the pitfall

The stated concentrations and full ingredients list make it easier to compare this formula with another niacinamide serum.

Main benefit & highlights

10% niacinamide and 4% tranexamic acid according to the product information; 30 ml; fragrance-free and alcohol-free according to the product specifications.

Looking for more options?

We have put together a complete, up-to-date list of products that fully meet these strict selection criteria and the applicable European safety regulations.

How to build a serum routine

  1. Cleanse your face and apply toner if desired.
  2. Use two to three drops of serum unless the packaging instructs otherwise.
  3. Follow with a moisturiser to help lock in moisture.
  4. Apply sunscreen during the day, particularly when using vitamin C, retinal, retinol or acids.
  5. Introduce one new product at a time and patch test it on a small area of skin first.

A bakuchiol serum may be worth considering if you are looking for a formula without retinoids. However, “natural alternative” is still a brand claim, not a guarantee of an identical effect. For sensitive skin, a fragrance-free Centella ampoule or hyaluronic acid serum is generally easier to assess than a product containing several strong actives.

Frequently asked questions about face serum

When should you apply face serum?

Usually after cleansing and before moisturiser. A watery serum can be applied before a richer cream. When using retinol or retinal, always follow the instructions on the packaging and preferably apply these formulas in the evening.

How long does serum stay fresh?

Check the expiry date and the symbol indicating the period after opening, such as 12M. Keep the bottle closed, somewhere cool and away from direct sunlight. Vitamin C, retinol and retinal products require extra care when it comes to storage and discolouration.

How much does a good face serum cost?

The price depends on the contents, brand, packaging and active ingredients. Compare the number of millilitres, recommended dosage and ingredients list. A 30 ml bottle may work out cheaper than a less expensive product that requires more per application.