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A Korean facial serum can be a simple way to add hydration or active skincare ingredients to your routine. However, there is a huge range to choose from, from lightweight K-beauty serums to concentrated Korean ampoules containing niacinamide, azelaic acid or retinoids.
The packaging does not always tell the whole story. Pay particular attention to the ingredients list, directions for use and suitability for your skin. This will help you avoid buying a product that is too strong, does not work well with your routine or ends up sitting unused in the bathroom.
A serum containing lots of active ingredients may sound appealing, but more ingredients does not automatically mean it will suit your skin better. A formula containing niacinamide, vitamin C, tranexamic acid and retinoids may be interesting for experienced users, but it can also be difficult for beginners to introduce gradually.
Start by considering your main goal:
A 10% niacinamide serum, for example, may seem stronger than a product that does not state a percentage. However, the percentage does not tell you how your skin will react or how the complete formula has been put together. Also check whether the product contains fragrance, alcohol, essential oils or other ingredients to which you may be sensitive.
With azelaic acid, the concentration is a useful point of comparison. The SKIN1004 formulas mentioned contain 10% azelaic acid, but you should still introduce the product gradually. According to the product information, you may experience a slight tingling or warm sensation at first.
A brightening serum is designed to give the complexion a fresher or more even appearance. This is different from a medical treatment or a guarantee that pigmentation will fade. Brands may communicate their own research findings or product claims, but these do not automatically apply to everyone. Focus mainly on the verifiable ingredients and directions for use.
Daily sun protection is important when using products containing vitamin C derivatives or retinoids. A serum is not a substitute for sunscreen.
A watery ampoule often works well under a moisturiser and feels lightweight on combination or oily skin. A milky or oil-based formula may feel more comfortable on dry skin. Do you need a facial serum for sensitive skin? If so, preferably choose a formula with a limited number of active ingredients and test a small amount on an inconspicuous area first.
Based on the product information, the SKIN1004 Madagascar Centella Ampoule is a lightweight formula containing centella asiatica extract. The ampoule is available in several sizes, including 30 ml, 55 ml and 100 ml.
Consider which ingredients you are already using. An azelaic acid serum may work alongside a hydrating serum, but do not introduce several strong products at once. According to some product advice, a niacinamide serum and vitamin C may be better used at different times. Always check the label of the specific product.
Retinol and retinal require extra care:
Do not compare only the price of a bottle; consider the amount it contains as well. A 100 ml ampoule can offer good value when you use a few drops each day. A 9 ml shot ampoule, on the other hand, is useful for trying out an active formula first.
Check the shelf-life information on the packaging. The Ordinary Niacinamide 10% + Zinc 1% states a period after opening of 12 months. Store serums according to the label, usually in a cool, dry place away from direct sunlight.
Why it suits this profile: A simple ampoule with 100% centella asiatica extract and a 30 ml capacity. A useful first step for a gentle, uncomplicated routine.
The short formula means you do not introduce several active ingredients at once.
Watery texture, 30 ml capacity and a clearly defined key ingredient.
Why it suits this profile: For anyone looking to combine hydration and a more even-looking complexion in one routine.
The ingredients list specifically includes niacinamide, tranexamic acid, madecassoside and a vitamin C derivative.
100 ml capacity, fast-absorbing texture and several verifiable skincare ingredients.
Why it suits this profile: Designed for users looking for a serum for blemishes, visible redness or an uneven complexion.
The formula is niacinamide-free, and the directions recommend building up use gradually to help the skin adjust.
10% azelaic acid, centella asiatica and a 30 ml capacity; suitable for a gradual routine.
For a gentle hydrating serum, you could choose centella, panthenol or hyaluronic acid. Looking for a serum for enlarged pores? Look for niacinamide, hydrating ingredients and a lightweight texture. A pore serum cannot permanently change pore size; it can mainly help the skin look more even.
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.
Look for a simple formula containing centella asiatica, panthenol, glycerin or hyaluronic acid. At first, avoid using several strong active ingredients at the same time. Test the product on a small area of skin first and stop using it if irritation persists.
Sometimes, but there is no need to use everything at once. Start with one active serum and only add a second product later. Follow the label and, if in doubt, use them at different times, for example vitamin C in the morning and niacinamide at another time.
This depends on the amount it contains and how you use it. A 30 ml bottle may last from several weeks to several months with daily use; a 100 ml ampoule will generally last longer. Always check the shelf life and period after opening on the packaging. Bear the directions for use in mind, as an active formula does not need to be applied indefinitely or in large amounts.
