Joybuy Insights

Choosing a Face Serum: A Practical Guide to Skin Type, Ingredients and Usage

A face serum can be a useful addition to your daily skincare routine, but not every product suits every skin type. If you only go by terms like “glow”, “deep hydration” or “anti-aging”, you may end up paying for a formula that doesn’t match your actual needs. The right choice starts not with the packaging, but with your skin type, the ingredients and the instructions for use.

Common Pitfalls When Choosing a Face Serum

1. A standout ingredient doesn’t tell the whole story

A product containing vitamin C, niacinamide or hyaluronic acid may look appealing, but the overall formulation determines how the serum feels and what it’s intended for. Also pay attention to the order of ingredients. Substances listed higher up are generally more prominent than those at the bottom.

A hyaluronic acid serum is primarily aimed at adding moisture to the skin, while a niacinamide serum is often chosen for a more even complexion and a more comfortable skin feel. That doesn’t automatically mean every product with these ingredients works the same way.

2. “Suitable for sensitive skin” is no guarantee

A brand claim is not a personal guarantee. According to the brand’s product information, a formula may be suitable for a certain skin type, but your skin can still react to, for example, fragrance, alcohol, acids, retinoids or a high concentration of active ingredients.

Always check the ingredients list and test a new serum for sensitive skin on a small area first. Stop using it if you experience persistent redness, itching, swelling or a burning sensation, and seek advice from a doctor or dermatologist if needed.

3. Using too many active serums at once

Vitamin C, retinal, azelaic acid, salicylic acid and exfoliating ingredients can each have a place in a routine. However, using several strong products at the same time makes it harder to determine what’s causing irritation. Start with one new serum and build up usage gradually according to the label.

A serum does not replace a moisturiser or sunscreen. Daily sun protection is especially important with products containing vitamin A or acid-based ingredients.

Which Specifications Should You Check?

Skin needs and texture

First, choose one main goal:

  • Dry skin: look for glycerin, beta-glucan, panthenol, ceramides and hyaluronic acid.
  • Sensitive skin: go for a short, fragrance-free formula with soothing ingredients such as panthenol, allantoin or centella asiatica.
  • Dull skin: a vitamin C serum, niacinamide serum or a formula with arbutin can help achieve a more even complexion.
  • Blemish-prone skin: look for niacinamide, salicylic acid or azelaic acid. Introduce these ingredients gradually.
  • Mature skin: an anti-aging serum often contains retinal, retinol, peptides, adenosine or ceramides. Check the frequency of use and any warnings.

Product claims about reducing pigmentation spots, fine lines or acne should not be taken as guaranteed results. According to a brand’s own research, certain benefits may be claimed, but results vary from person to person and depend on your skincare routine.

Concentration and active ingredients

A higher percentage is not automatically a better buy. A formula with 10% niacinamide or 10% azelaic acid may be too strong for some users. Alongside the percentage, look at the additional hydrating ingredients and the recommended build-up.

With retinal or retinol, extra caution is needed. These substances can increase sensitivity to sunlight. Preferably use the product according to the recommended evening routine and apply sunscreen during the day.

Volume, shelf life and packaging

Don’t just compare the price of the bottle; also look at the volume in millilitres and the dosage per use. A pipette often dispenses a few drops, while a pump bottle can deliver a more consistent amount.

Check the expiry date, the batch number and the period after opening, for example 12M. Store a serum in a cool, dry place away from direct sunlight. Close the packaging properly after use to limit oxidation and contamination.

Also pay attention to the application. A hair product like Lucovitaal Hair Vitamin for Dry Hair - Leave-in Serum 25 Capsules is not a face serum. This leave-in product is intended for dry hair lengths and ends.

Recommended Face Serums by User Profile

Suitable for: Budget-conscious beginners
iUNIK Beta-Glucan Power Moisture Serum, 50 ml

iUNIK Beta-Glucan Power Moisture Serum, 50 ml

Why this fits the profile: A hydrating serum with a simple focus is practical if you don’t yet have an extensive routine and mainly want to tackle dryness.

How this product avoids the pitfall

The product information clearly focuses on moisturising care, without combining a long list of complex goals.

Key benefit & highlights

50 ml volume; beta-glucan as the central ingredient; intended for use after cleansing or toner.

Suitable for: Specific use & intensive users
celimax THE VITA-A RETINAL SHOT TIGHTENING BOOSTER 15ml

celimax THE VITA-A RETINAL SHOT TIGHTENING BOOSTER 15ml

Why this fits the profile: This product is designed for users who consciously want to add a retinal formula to their evening routine and can gradually build up the frequency.

How this product avoids the pitfall

The instructions recommend starting every other evening, using a small amount and applying sunscreen the following morning.

Key benefit & highlights

0.1% retinal according to the product description; 15 ml; clear warning about sun sensitivity and irritation.

Suitable for: Dull skin and uneven skin tone
Beauty Of Joseon Glow Deep Serum Rich + Alpha Arbutin 30ml

Beauty Of Joseon Glow Deep Serum Rich + Alpha Arbutin 30ml

Why this fits the profile: The formula combines rice bran water, 2% alpha-arbutin and niacinamide for those mainly seeking a more even and hydrated complexion.

How this product avoids the pitfall

The product description lists the key percentages and advises using it with a moisturiser, making the choice easier to evaluate.

Key benefit & highlights

30 ml; 2% alpha-arbutin according to the product information; alcohol-free and fragrance-free according to the product specifications.

Looking for more options?

We’ve put together a full, up-to-date list of products that fully meet these strict selection criteria and comply with current European safety regulations.

How to Use a Face Serum Properly

  1. Cleanse your face and use toner if desired.
  2. Apply a small amount of serum to a dry or slightly damp skin, depending on the product instructions.
  3. Gently pat the product in and wait a short while before applying moisturiser.
  4. Use sunscreen during the day, especially with vitamin C, acid or vitamin A products.
  5. Introduce one new product at a time and keep track of how your skin reacts.

Frequently Asked Questions About Face Serums

How often should you use a face serum?

That depends on the formula. A hydrating serum can often be used daily, in the morning and/or evening. Start with active ingredients such as retinal, azelaic acid or acids less frequently and follow the instructions on the packaging.

How long does a bottle of face serum last?

A 30 ml bottle can last from a few weeks to several months with daily use. This varies depending on dosage, packaging and frequency of use. Always check the expiry date and the indicated period after opening.

How much does a good face serum cost?

The price depends on the volume, ingredients, packaging and brand. Compare products by price per millilitre and see if the formula suits your skin needs. A more expensive serum is not automatically more suitable; a simple hydrating formula may be enough for your routine.