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Korean serums are popular thanks to their lightweight textures, active ingredients and extensive choice. However, it is not advisable to rely solely on terms such as “glow”, “plumping” or “glass skin”. A serum is most effective and comfortable to use when its formula suits your skin type, routine and tolerance of active ingredients.
The most common purchasing mistakes are easy to avoid:
A hydrating serum is usually an accessible addition to a daily routine. Look for ingredients such as hyaluronic acid, glycerine, panthenol, beta-glucan and ceramides. Hyaluronic acid helps attract and retain moisture; applying a moisturiser over it helps maintain that comfortable feeling for longer.
If your complexion looks dull or uneven, you could consider niacinamide, vitamin C, alpha-arbutin or tranexamic acid. Product descriptions may describe a serum as a serum for pigmentation, but visible results vary from person to person. Always use sun protection during the day, especially when your routine includes vitamin C, retinal or other active ingredients.
If your skin is prone to reacting, a simple formula, minimal fragrance and gradual introduction are often more important than the number of active ingredients. A serum for sensitive skin is not automatically suitable for everyone: if in doubt, carry out a patch test first.
The concentration does not tell the whole story. The pH value, combination of ingredients and texture also determine how intense a product feels. Start with one new serum at a time and initially use a small amount.
With a retinol serum or retinal product, a gradual approach is important. The product information for celimax The Vita-A Retinal Shot Tightening Booster states that it contains 0.1% retinal and recommends starting every other evening for the first two weeks. The product is intended for evening use; sunscreen is essential during the day.
A formula containing azelaic acid may be worth considering if you have redness or blemishes. According to the product information for ANUA Azelaic Acid 10 Hyaluron Redness Soothing Serum, this formula contains 10% azelaic acid. The instructions recommend starting once or twice a week. This makes it clear why a “serum for acne” or redness should not simply be applied daily and in large quantities.
Do not compare the price alone; check the volume too: 15, 20, 30, 50 and 150 ml are all available. A larger bottle is only good value if you can finish it within the recommended period of use.
Vitamin C formulas deserve extra attention. According to the product information, Vitamin C23 Anti aging serum contains 23% ascorbic acid and should be stored in the refrigerator after opening, preferably being used within two months. Also check the expiry date, batch information and current ingredients list on the packaging. Formulas can change.
Why it suits this profile: A simple starting point for anyone who mainly wants to add moisture without immediately using several powerful active ingredients. The 50 ml volume is practical for daily use.
According to the product description, the focus is on beta-glucan and hydration rather than a long list of intensive acids or retinoids.
50 ml; beta-glucan as the key ingredient; designed to provide moisture as part of a daily routine.
Why it suits this profile: Suitable for anyone looking for a versatile hyaluronic acid serum that fits into an extensive Korean skincare routine both morning and evening.
The product description mentions five types of hyaluronic acid and states that the formula is fragrance-free. Check the current packaging for the latest formulation.
50 ml; five types of hyaluronic acid according to the product information; with panthenol, ceramide NP and beta-glucan.
Why it suits this profile: For users who deliberately want to add a retinal product to their evening routine and can increase the frequency carefully.
The directions state 0.1% retinal, recommend starting every other evening and advise using it less frequently if irritation occurs. This helps prevent increasing usage too quickly.
0.1% retinal; 3% Matrixyl 3000 according to the product information; 15 ml; clear instructions for evening use.
Apply a serum after cleansing and, if desired, after toner, but before your moisturiser. Two to three drops are often enough; always follow the brand’s instructions. In the morning, use sunscreen offering suitable protection. If you have sensitive skin, you can start by using it two to three times a week.
Do not immediately combine a vitamin C serum, retinol serum and exfoliating acid. It is better to alternate products, for example vitamin C in the morning and retinal in the evening, provided your skin tolerates it. If you experience burning, swelling, itching or persistent redness, stop using the product. If you have existing skin concerns or are unsure about active ingredients, seek medical advice.
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.
Start by looking for a hydrating serum containing hyaluronic acid, glycerine, panthenol, beta-glucan or ceramides. Dry skin may also benefit from a moisturiser applied after the serum. The texture is less important than your overall routine and how comfortable your skin feels.
Often, yes, but check the full formula. According to the product information, Beauty of Joseon Glow Serum Propolis Niacinamide contains 60% propolis extract, 2% niacinamide and salicylic acid. Start slowly and do not combine it immediately with several exfoliating products. Stop using it if irritation occurs and always check the packaging for current warnings.
This varies by product and is stated on the packaging, often as an icon showing, for example, 12M. Store the serum according to the instructions. Light- and oxygen-sensitive formulas, such as some vitamin C serums, may have additional storage requirements. If necessary, note the opening date and stop using the product if its scent, colour or texture changes noticeably.
