Choosing Korean facial serums: a practical guide for every skin concern

A serum can complement your skincare routine in a targeted way, but not every K-beauty serum suits every skin type. If you only go by terms such as “glow”, “glass skin” or a long ingredients list, you can easily end up buying a product that is too strong, too sticky or simply unnecessary.

When choosing Korean facial serums, three pitfalls are particularly important:

• A higher percentage is not automatically better. A serum containing 10% niacinamide or 10% azelaic acid may be too intense for some skin types. Start slowly with active ingredients and gradually build up usage.
• Marketing claims do not tell you everything about the formula. Check the full ingredients list, volume and directions for use. A brand’s own research may report certain results, but this is not a guarantee for every user.
• A serum does not replace moisturiser or sunscreen. A hydrating serum can complement your routine, while a cream can help lock in moisture. Use a sunscreen product during the day, especially with serums containing retinol, vitamin C, acids or ingredients that may make the skin more sensitive to sunlight.

Which features should you check?

1. Choose based on your skin concern first

Decide on one main reason for buying a serum. This makes comparing products easier.

• For dry or tight-feeling skin, a hyaluronic acid serum, beta-glucan serum or formula containing glycerine and panthenol is often a good choice.
• For sensitive skin, a serum for sensitive skin containing centella, panthenol or allantoin, together with a short ingredients list, can be a practical option. Always check for potential allergens.
• For an uneven complexion or pigmentation, look for an anti-pigmentation serum containing niacinamide, tranexamic acid, alpha-arbutin or a vitamin C derivative.
• For oily or troubled skin, common ingredients include niacinamide, propolis, tea tree and azelaic acid. However, an acne serum is not a medicine; stop using it if irritation occurs and seek advice from a healthcare professional if problems persist.
• If your main concerns are elasticity and fine lines, you could consider a peptide serum or a formula containing bakuchiol. Product claims about firming or anti-ageing come from the brand and should not be interpreted as guaranteed results.

2. Consider both the concentration and the combination

An ingredients list shows which substances are present in a product, but not always their exact concentrations. Where percentages are stated, they can be useful for comparison. For example, according to the product information, ANUA Niacinamide 10% + TXA 4% Serum contains 10% niacinamide and 4% tranexamic acid.

Do not combine several strong serums in the same routine straight away. For example, do not use a retinol serum, an acid and a highly concentrated vitamin C serum at the same time if your skin is not yet used to them. Test a new product on a small area of skin first and follow the instructions on the label.

3. Check the texture, volume and shelf life

A watery formula feels comfortable on oily or combination skin, while a slightly richer texture may be better suited to dry skin. Also check the volume: 30 ml is common for an active serum, while some hydrating essences contain 100 ml or more.

When your order arrives, check the expiry date, batch information and period after opening on the packaging. Store a serum in a cool place away from direct sunlight when indicated on the label. If the smell, colour or texture changes, or the product starts to sting, stop using it.

Our recommendations by user profile

Suitable for: Shoppers seeking premium quality

Torriden DIVE IN Low Molecule Hyaluronic Acid Serum 50ml

Why it suits this profile: This option focuses clearly on hydration and, according to the product information, contains five types of hyaluronic acid, plus panthenol, ceramide NP and beta-glucan.

How this product avoids the pitfall

The product information states that the formula is fragrance-free. This can help shoppers who deliberately want to avoid fragrances, although a patch test is still advisable.

Key benefit & advantages

50 ml volume; several forms of hyaluronic acid; fragrance-free according to the product description.

Suitable for: Targeted use & experienced users

ANUA Azelaic Acid 10 Hyaluron Redness Soothing Serum 30ml

Why it suits this profile: This serum is aimed at users who want to incorporate azelaic acid into a routine focused on redness, an uneven complexion or troubled skin.

How this product avoids the pitfall

The directions advise starting with 1 to 2 drops, once or twice a week. This helps prevent you from using too much product straight away.

Key benefit & advantages

10% azelaic acid; contains panthenol, beta-glucan, centella and ceramide NP; the product information includes a gradual introduction schedule.

How to use a serum in your routine

1. Cleanse your face and use toner if desired.
2. Apply one to a few drops of serum to dry or slightly damp skin, depending on the label.
3. Apply moisturiser afterwards.
4. Add sunscreen during the day.
5. Introduce only one new active serum at a time, so you can identify any reaction more easily.

Do not automatically use a vitamin C serum, retinol serum or acid together with other active formulas. If you have sensitive skin, gradually building up usage is usually more practical than starting daily.

Frequently asked questions about Korean facial serums

Which Korean serum is suitable for dry skin?

Look for glycerine, panthenol, beta-glucan, ceramides and hyaluronic acid. A facial serum for all skin types may also be suitable, but check the texture and follow with a moisturiser.

How often should you use a K-beauty serum?

This depends on the formula. According to the label, a simple hydrating serum can often be used in the morning and evening. With highly concentrated niacinamide, azelaic acid, retinol or vitamin C, it is advisable to start a few times a week.

How long does a serum last?

Check the expiry date and period-after-opening symbol on the packaging. Keep the product tightly closed and away from direct sunlight. Stop using it if there is a noticeable change in smell, colour or texture, or if irritation develops.