Choosing a Face Serum: How to Find a Formula That Suits Your Skin

A face serum can be a useful addition to your daily routine, but a higher concentration or a bold promise doesn't automatically mean a product is right for your skin. If you're mainly drawn to terms like "glow", "intensive repair" or "instant results", you risk buying several bottles without a clear routine.

The most common pitfalls:

• Too many active ingredients at once: combining vitamin C, niacinamide, retinol and acids can leave your skin feeling uncomfortable.
• Confusing a marketing claim with a guarantee: statements about brightness, firmness or an even complexion are usually based on the product description or the brand's own research. According to a brand's own findings, such results aren't automatically the same for everyone.
• Ignoring texture and volume: comparing a 9 ml serum with a 100 ml ampoule on price alone is difficult without considering how often you use it and how much you apply each time.

Which specifications should you check?

1. First, choose your main skin goal

Decide on one primary priority. For a dull or uneven complexion, you could look for a brightening serum, a vitamin C serum or a serum with alpha-arbutin. If you're particularly keen to tackle visible dark spots, consider a serum for pigmentation or a serum for dark spots. Always check whether the claim is about reducing visibility, not about treating a medical condition.

For a tight, uncomfortable feeling, glycerin, panthenol, betaine and hyaluronic acid are relevant ingredients in a hydrating serum. For sensitive skin, a short ingredient list is often easier to navigate. Centella asiatica is common in a serum for sensitive skin and in a centella ampoule. However, the presence of an ingredient alone doesn't tell you how your own skin will react.

2. Look at the concentration and the full ingredient list

A percentage is only meaningful when you know which ingredient it refers to. For example, The Ordinary Alpha Arbutin 2% + HA contains 2% alpha-arbutin and sodium hyaluronate. The Ordinary Niacinamide 10% + Zinc 1% uses a higher niacinamide concentration and, according to the product description, is intended for the visibility of blemishes and excess sebum production.

Also, watch out for potential points of concern:

• Vitamin C: a derivative such as ascorbyl glucoside differs from pure ascorbic acid.
• Retinol or retinal: build up slowly and use sun protection during the day. According to the usage instructions, the celimax retinal product is intended for evening use.
• Fragrances and alcohol: relevant if your skin reacts sensitively to them.
• Niacinamide: check the concentration if you're already using several products containing this ingredient.

When trying a new product, always do a patch test first and stop if irritation persists. Only use cosmetics in the way stated on the packaging.

3. Compare texture, volume and time of use

A watery serum usually absorbs quickly and can be pleasant under sunscreen or make-up. A richer formula with oils, silicones or several hydrating ingredients may be better suited to dry skin, but can feel heavier.

Also consider the volume:

• 9–15 ml: suitable for gently trying out a targeted active formula.
• 30 ml: a standard amount for daily use.
• 55–100 ml: interesting if you use a simple ampoule several times a week or daily.

A Korean skincare serum routine doesn't have to involve many steps. For many users, cleansing, serum, moisturiser and sunscreen during the day is more straightforward than using several highly active formulas at once.

Recommended face serums by user profile

Suitable for: Budget-conscious beginners

The Ordinary Alpha Arbutin 2% + HA 60ml

Why this suits the profile: The water-based formula, 60 ml volume and two clearly named main ingredients make this a straightforward choice for anyone starting out with a serum for pigmentation.

How this product avoids the pitfall

The product information states 2% alpha-arbutin and hyaluronic acid, so you're not relying solely on a general brightening claim.

Key benefit & highlights

60 ml; lightweight formula; contains 2% alpha-arbutin and sodium hyaluronate; according to the product information, suitable for all skin types.

Suitable for: Shoppers seeking top quality

Shiseido Ultimune Power Infusing Concentrate 75 ml

Why this suits the profile: The generous 75 ml volume suits users looking for a staple in their morning and evening routine who value a luxurious serum texture.

How this product avoids the pitfall

The choice isn't just about claims: you can check the product variant, volume, manufacturer details and usage instructions beforehand.

Key benefit & highlights

75 ml; intended for face and neck; lightweight, fast-absorbing formula according to the product description.

Suitable for: Specific use & intensive users

celimax The Vita-A Retinal Shot Tightening Booster 15ml

Why this suits the profile: This product is aimed at users who are specifically looking for an anti-ageing serum with retinal and are willing to follow the build-up instructions carefully.

How this product avoids the pitfall

The instructions mention 0.1% retinal, evening use only, starting every other night and using daily sunscreen. This makes the usage boundaries much clearer.

Key benefit & highlights

0.1% pure retinal; 15 ml; according to the product information, also contains Matrixyl 3000; clear build-up guidance for new users.

How to use a face serum without making unnecessary mistakes

1. Cleanse the skin and pat it dry gently.
2. Apply a few drops, unless the packaging states a different amount.
3. Follow with a moisturiser to lock in hydration.
4. Use sunscreen during the day, especially with products containing vitamin C, retinal or other formulas that, according to the product information, may increase sensitivity to the sun.
5. Introduce one new active product at a time. This way, you can better identify how your skin reacts.

A vitamin C serum, for example, may be better suited to the morning, while a retinal formula may be intended for the evening. The Ordinary also notes that niacinamide should be used alternately with certain vitamin C formulas. Always check the specific instructions for your product.

Frequently asked questions about face serums

Which face serum is suitable for sensitive skin?

Look for a simple formula with hydrating or soothing ingredients, such as hyaluronic acid, panthenol or centella asiatica. A centella ampoule like the SKIN1004 Madagascar Centella Ampoule is, according to the product description, focused on hydration and a comfortable skin feel. Patch testing is still advisable.

How long can you use a serum?

Check the expiry date, batch information and period after opening on the packaging. A product marked 12M, for example, can generally be used for up to twelve months after opening, as long as it has been stored correctly and the smell, colour or texture haven't noticeably changed. Always follow the label.

Can you combine several serums?

Sometimes you can, but start slowly. Don't combine several strong active ingredients straight away. A hydrating serum can often be used more easily alongside a targeted brightening serum, whereas retinal, vitamin C and niacinamide require extra attention to order and timing of use. If you have persistent skin concerns, consult a doctor or pharmacist.