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Choosing a face serum: how to find a formula that suits your skin

A face serum can be an easy way to target a specific need in your skincare routine. But there’s plenty of choice, from Korean face serums with Centella and hyaluronic acid to retinol serums, peptide serums and PDRN serums. The packaging often promises a more even-looking complexion, less visible fine lines or long-lasting hydration. These claims shouldn’t be taken as a guarantee of results.

As a Joybuy Product Recommendation Officer, I filter the key product information in a practical way. This helps you compare serums based on ingredients, concentration, usage advice and skin type, rather than relying on eye-catching marketing terms alone.

Common pitfalls when buying a serum

1. A long ingredients list doesn’t tell you everything

A product with lots of active ingredients isn’t automatically right for your skin. For example, a serum might combine niacinamide, retinol, acids, vitamin C and fragrance. This can make it harder to work out which ingredient has caused a reaction.

So start by thinking about what you want the serum to do:

  • Hydrating serum: look for glycerine, hyaluronic acid, panthenol and other humectants.
  • Serum for sensitive skin: check for fragrance, alcohol and known allergens.
  • Serum for redness: Centella Asiatica and panthenol are often chosen for a soothing routine.
  • Serum for dark spots: ingredients such as tranexamic acid, azelaic acid and vitamin C are common in this category. They won’t change the appearance of your skin straight away.
  • Anti-ageing serum: peptide formulas, retinal, retinol and bakuchiol are popular options for visible signs of skin ageing.

2. A high percentage isn’t a universal measure of quality

A claim such as “10%” or “pure retinal” catches the eye, but it doesn’t tell you on its own how pleasant or suitable a formula will be. The overall formulation, packaging and frequency of use are just as important.

It’s sensible to introduce a concentrated ampoule serum gradually. Try a new product on a small area of skin first, and don’t combine several potent active ingredients in the same routine straight away.

3. “For all skin types” doesn’t mean it will suit everyone

A product description might say a serum is suitable for all skin types, but your skin could still react to fragrance, retinoids or an applicator technology that causes tingling. Always check the current ingredients list on the packaging. Formulas can change.

Stop using the product if you experience persistent irritation, swelling, itching or a burning sensation. If you’re unsure about a skin reaction, contact a doctor or dermatologist.

The key things to compare

1. Start by choosing your skincare goal

Decide what you’d like to add to your routine. For dry skin, a hyaluronic acid serum followed by a cream is a sensible combination. For oily or blemish-prone skin, a lightweight formula with azelaic acid may be worth considering. If you’re mainly looking for a calmer-looking complexion, a Centella serum is often a good place to start.

A serum for a more even-looking complexion may contain niacinamide, tranexamic acid or vitamin C. Check the full formula and introduce it gradually.

2. Check the texture and size

A watery essence usually absorbs quickly and layers easily under a moisturiser. An oilier or creamier serum may suit dry skin better, but it won’t feel comfortable for everyone under sun cream or make-up.

Compare the size, too:

  • 15 to 20 ml is handy if you want to try an active formula first.
  • 30 ml is a common size for everyday use.
  • 50 to 100 ml may be better value if you use a simple, gentle ampoule often.
  • Individual 1 ml ampoules are practical for measuring out a set amount, but create more packaging waste.

3. Take extra care with retinol, retinal and spicule formulas

Retinol and retinal can increase sensitivity to sunlight. Follow the usage instructions, wear sun cream during the day and start by using the product less often. According to celimax product information, the Vita-A Retinal Shot is for evening use only.

A tingling sensation may occur with a Reedle or micro-spicule serum, according to the product description. Don’t use these products on damaged or irritated skin, and check the instructions before combining them with other intensive treatments.

Recommended face serums for different users

Suitable for: Budget-conscious beginners
SKIN1004 Madagascar Centella Ampoule 100 ml

SKIN1004 Madagascar Centella Ampoule 100 ml

Why it suits this profile: The simple Centella formula and generous size make it a good choice if you want to start with a lightweight, hydrating serum without combining several active ingredients straight away.

How this product avoids the pitfall

The product description states that it contains 100% Centella Asiatica extract. This makes the formula’s purpose clearer than that of a serum with lots of active ingredients that aren’t explained.

Key benefits and highlights

100 ml; lightweight ampoule for use on the face and neck; designed to hydrate and soothe, according to the product information.

Suitable for: Shoppers looking for premium quality
Klairs Midnight Blue Youth Activating Drop

Klairs Midnight Blue Youth Activating Drop

Why it suits this profile: This night-time serum is a good fit for anyone looking for a lightweight, fragrance-free formula with hyaluronic acid and peptides.

How this product avoids the pitfall

The product information describes a fragrance-free formula with a watery texture. This makes it a considered choice if you want to avoid heavy or fragranced serums.

Key benefits and highlights

20 ml; contains copper peptides and hyaluronic acid according to the ingredients list; suitable for evening use.

Suitable for: Targeted use and experienced users
celimax The Vita-A Retinal Shot Tightening Booster

celimax The Vita-A Retinal Shot Tightening Booster

Why it suits this profile: This serum is designed for users who want to deliberately add a retinal formula to their evening routine and are prepared to introduce it gradually.

How this product avoids the pitfall

The usage instructions recommend using a small amount every other evening for the first two weeks. They also advise using sun protection the following morning.

Key benefits and highlights

15 ml; contains 0.1% pure retinal and 3% Matrixyl 3000 according to the product description; designed for night-time use.

Looking for more options?

We’ve put together a complete, up-to-date list of products that meet these strict selection criteria and the applicable European safety regulations.

How to use a face serum in your routine

  1. Cleanse your face and gently pat your skin dry.
  2. Apply toner if you like.
  3. Usually, use 2 to 3 drops of serum, unless the packaging says otherwise.
  4. Finish with a moisturiser.
  5. Wear sun cream during the day, especially when using retinol, retinal or other active formulas.

Don’t apply several new serums at the same time. This makes it easier to see how your skin reacts to each product.

Frequently asked questions about face serum

How often should you use a face serum?

A hydrating serum can often be used daily if the packaging says so. A retinol serum, retinal serum or intensive ampoule serum usually calls for a lower starting frequency. Follow the label and cut back if you experience irritation.

Can a serum replace a moisturiser?

Usually not. A serum is generally designed around a particular texture or ingredient, while a moisturiser helps finish your routine. For dry skin, a hydrating serum often feels better when used with a cream.

How long does a face serum last?

Check the expiry date and the period-after-opening symbol on the packaging. Keep the product tightly closed in a cool place, away from direct sunlight. Proper storage is especially important for vitamin A formulas. If the smell, colour or texture changes noticeably, check the packaging before using it again.