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

A K-beauty serum can be a targeted step in your routine, but the wide range of options can make choosing difficult. A hydrating serum, brightening serum and retinol or retinal serum all have different properties. If you focus only on terms such as “glow”, “lifting” or “glass skin”, you could end up with a product that does not suit your skin or routine.

The most common pitfalls are:

1. Mistaking a higher percentage for a better choice. A vitamin C serum with 23% ascorbic acid or a serum with 10% azelaic acid requires more attention to building up usage, storage and skin reactions.
2. Combining several active ingredients at the same time. Retinal, retinol, vitamin C, acids and niacinamide can create an unnecessarily complicated routine when used together.
3. Reading marketing claims as guaranteed results. Words such as “reduces pores” or “lightens dark spots” often describe the brand’s positioning, not a guarantee for every user.

What should you look for in a Korean serum?

1. Start by choosing your skin concern

Decide what you want to add to your routine with the serum:

• Dry or dehydrated skin: look for glycerine, panthenol, betaine, sodium hyaluronate or other forms of hyaluronic acid.
• Dull complexion: look for vitamin C, niacinamide, alpha-arbutin or tranexamic acid.
• Dark spots and uneven skin tone: a dark-spot serum containing alpha-arbutin, niacinamide or tranexamic acid may suit this concern. Do not expect instant results and use a sunscreen during the day.
• Fine lines and texture: retinal, retinol and peptide serums are ingredients worth comparing. Start retinoids at a low frequency.
• Sensitive or easily reactive skin: a serum with centella asiatica, panthenol, allantoin and a short, easy-to-understand ingredients list is often simpler to introduce.

A face serum will not usually replace a moisturiser. It is generally applied after cleansing and, if desired, toner, followed by a cream.

2. Check the active ingredient and its concentration

The ingredients list tells you more than the front of the packaging. Among other things, look out for:

• Vitamin C serum: According to the product information, Vitamin C23 contains 23% ascorbic acid. That is a high concentration. A patch test and cool, dark storage are important according to the usage instructions.
• Niacinamide serum: 4–10% is common in this selection. A higher percentage is not automatically more comfortable for every skin type.
• Retinal serum: retinal is a form of vitamin A. Use the product according to the instructions, build up gradually and wear sun protection the following morning.
• Peptide serum: peptides are worth considering if you are looking for a lightweight, hydrating serum without a retinoid.
• Azelaic acid serum: According to the product information, products with 10% azelaic acid may initially cause a tingling or warm sensation. Start with a small amount and use it infrequently.

A brand’s own research may suggest that certain ingredients can, for example, contribute to a more even complexion, a firmer-looking appearance or less visible fine lines. Treat this as product information, not a guaranteed result. Stop using the product if irritation persists.

3. Consider the contents, shelf life and packaging

Do not compare the price alone; compare the quantity too. The serums mentioned range from 9 ml to 150 ml. A small bottle can be useful for trying out an active ingredient first, while a 150 ml booster is practical for daily use across the whole face.

Also check:

• the expiry date on the packaging;
• the period after opening, such as 6M or 12M;
• whether the product needs to be stored away from light and air;
• whether fragrance, alcohol or known allergens appear in the ingredients list;
• whether the usage instructions suit your routine.

For example, the product information for Vitamin C23 states that it should be used within two months of opening and stored in the fridge. This makes the serum less suitable if you are looking for a simple product that you can use without taking extra storage measures.

Our recommendations by user profile

Suitable for: Budget-conscious beginners

Beauty Of Joseon Light On Serum: Centella + Vita C

Why it suits this profile: The combination of centella asiatica, 3-O-ethyl ascorbic acid, glycerine and hydrated hyaluronic acid provides a straightforward starting point for anyone who wants to combine hydration with a radiant-looking complexion.

How this product avoids the pitfall

The product information states that it contains 30 ml, has a lightweight texture and can be used in the morning and evening. This makes it easier to place within a routine than a formula containing several strong retinoids or acids.

Key benefit & highlights

30 ml; centella asiatica and a vitamin C derivative; glycerine and hyaluronic acid for hydration; according to the product specification, free from essential oils.

Suitable for: Shoppers looking for premium quality

The 6 Peptide Skin Booster Serum 150 Ml

Why it suits this profile: The generous size and combination of six peptides, niacinamide, glycerine and sodium hyaluronate suit experienced users looking for a daily booster.

How this product avoids the pitfall

The formula does not contain retinol, retinal or a high concentration of vitamin C. This makes it easier to combine with a separate active step, as long as you build up your full routine gradually.

Key benefit & highlights

150 ml; six listed peptides; niacinamide, allantoin and several humectants; intended for morning and evening use according to the product information.

Suitable for: Targeted use & intensive users

celimax THE VITA-A RETINAL SHOT TIGHTENING BOOSTER 15ml

Why it suits this profile: This is a targeted night-time option for users who want to use retinal deliberately and are prepared to build up the frequency and amount carefully.

How this product avoids the pitfall

The usage instructions recommend starting in the evening, using a small amount and applying it every other evening during the first two weeks. This means the dosage is clearly defined rather than left to guesswork.

Key benefit & highlights

15 ml; 0.1% retinal and 3% Matrixyl 3000 according to the product description; clear warning about sun sensitivity and eye contact.

How to use a Korean serum in the Netherlands

Apply the serum to cleansed skin, usually after toner and before moisturiser. Introduce one new product at a time. If you have sensitive skin, first test a small amount on a limited area of skin.

Use retinol, retinal and high-concentration vitamin C according to the product instructions. During the day, sunscreen should be part of any routine containing these active ingredients. Do not automatically combine a vitamin C serum with retinal or other strong actives; for example, alternate them between morning and evening.

When buying online, check the full ingredients list, contents, shelf life and responsible party. This information should be verifiable on the product page or packaging and is more important than simply choosing a popular product name.

Frequently asked questions about Korean face serums

Which Korean serum is suitable for sensitive skin?

Look for a simple formula with hydrating and soothing ingredients, such as glycerine, panthenol, centella asiatica or hyaluronic acid. Introduce each serum gradually and check whether it contains fragrance, alcohol or an active ingredient you have reacted to in the past.

How long does a bottle of face serum last?

This depends on the contents and how you use it. A 30 ml bottle will generally last longer with a few drops per application than a 9 or 15 ml product. Always follow the period-after-opening guidance on the packaging. With vitamin C serums, storage and the recommended period of use may be particularly important.

Can I use several serums at the same time?

You can, but keep your routine straightforward. For example, combine a hydrating serum with a moisturiser, but do not introduce retinal, retinol, azelaic acid and a high dose of vitamin C all at once. Build up step by step so that you can better assess which product suits your skin.