Skincare

Face Serum Guide: Benefits, How to Use & Choose the Best One

Title

SkinTalks - October 09, 2026

Introduction

What is a face serum and what does it do?

What are the different types of face serum?

How to apply face serum

When should you use face serum

Top-rated face serum

Common face serum mistakes

Final tips

FAQs

Standing in front of a shop aisle of serums can feel like a chemistry exam. Essences, hyaluronic acid, vitamin C, retinol: where do you get started?

 

Weโ€™ve got the simple version here for you, Glowies. Face serums are a lightweight treatment with a concentration of active ingredients, and the right one can transform how your skin looks and feels. 

 

In this SkinTalks guide, we're covering what serums do, when to use them, and how to apply them, particularly for the coveted glass skin look. Weโ€™ll also cover our favorite Korean picks for every skin concern.

What is a face serum and what does it do?

Face serums target specific skin concerns by delivering concentrated skincare ingredients in a lightweight formula. Depending on the serum, it can help hydrate dry skin, brighten dark spots, smooth fine lines, calm redness or balance oily skin.

 

Think of a serum as the espresso shot of your skincare routine. It's concentrated and designed to do a lot in a few drops. What does this mean? A serum for face care has a higher concentration of powerful or active ingredients than most other products you use, and the thin texture and ingredients mean it sinks in fast and gets to work right away.

 

Serum is also the hero step in so many glass skin routines. While your cleanser preps your skin and your moisturizer locks everything in, a serum has a targeted job to do. Glass skin comes from a smooth, hydrated, even surface that reflects light, and face serum for glowing skin builds this up perfectly.

What are the different types of face serum?

Serum labels can quickly get confusing. Hereโ€™s a simple breakdown of common types.

Hydrating serums

These are built around ingredients like hyaluronic acid, beta glucan, or birch juice. They pull in and hold water so skin looks plump and dewy, which is the foundation of glass skin. Our guide to hyaluronic acid serums goes deeper on choosing one.

Brightening serums

These beauties use vitamin C, arbutin, or niacinamide to fade dark spots and even out tone. If you're chasing that lit-from-within look, our guide to vitamin C serums is your next stop.

Soothing serums

Calming or soothing serums often rely on centella asiatica (also called cica) and tea tree to calm redness and irritation, which makes them a great fit for reactive or breakout-prone skin.

Anti-aging serums

Anti-aging serums are made to keep skin looking firm, smooth, and youthful. They usually contain gentle retinol, which helps smooth texture and soften fine lines over time, or peptides, which support firmness and bounce.

Eye serums

The skin around your eyes is thinner and more delicate than the rest of your face, which is why it's often the first place to show dryness, fine lines, puffiness, and dark circles. 

 

A dedicated eye serum is formulated to be gentle enough for this area while still targeting those concerns, so it's a lovely extra step if your face serum feels too strong or too rich near your eyes. Read our guide to eye serums to learn more.

How to apply face serum

Apply face serum after cleansing and toner but before moisturizer. Use a few drops, gently spread or pat the serum across your face and allow it to absorb before applying your next product.

 

No matter which type of serum youโ€™re using, how you apply it can impact the results. Here are some tips to follow:

  • Start with clean, slightly damp skin. Damp skin helps serum spread and absorb, especially hydrating formulas. After cleansing and toning, pat gently and leave a little moisture behind.
  • Use less product than you think. Two to three drops is enough for most serums. 
  • Press, don't rub. Warm the drops between your palms, then press them gently into your skin, starting at the cheeks and moving outward to the forehead, nose, and chin. 
  • Layer thin to thick. If you use more than one serum, apply the most watery texture first and give each one about 30 seconds to settle.
  • Seal it in. Finish with a moisturizer to lock everything in.

When should you use face serum: morning or night?

Now that your technique is sorted, let's talk timing. 

 

Most face serums can be used in the morning, evening or both, depending on their ingredients. Hydrating and soothing serums generally work well at either time, while ingredients such as retinol should be used at night.

 

AM: In the morning, your skin needs hydration and protection, so hydrating and brightening serums like vitamin C are ideal, followed by moisturizer and sunscreen to keep your skin safe through the day. 

 

PM: In the evening, it's all about repair. Your skin does most of its renewing overnight, so this is when anti-aging serums do their best work. You can also alternate each night with a soothing serum to ensure that your skin doesnโ€™t get irritated. 

 

Eventually, itโ€™s a good idea to use one serum in the morning and a different one at night as this gives your skin exactly what it needs at each point of the day. However, if you're just starting out, keep it simple: begin with one serum and build from there so as not to overwhelm your skin.

Top-rated face serum for every skin concern

What is your skin asking for right now? Whether it's more moisture, less shine, a brighter tone, calmer redness, fewer breakouts, or a firmer feel, there's a type of face serum built for it. 

 

The best serum ingredients depend on your skin concern: hyaluronic acid supports hydration, vitamin C and niacinamide are popular for brightening, centella is commonly used in soothing formulas, while retinol targets signs of aging.

 

Find your skin concern below and you'll see which serum type to reach for, how to use it, and the Korean picks we love.

Face serum for uneven tone

Glow Deep Serum : Rice + Alpha-Arbutin

Glow Deep Serum : Rice + Alpha-Arbutin

โ‚ฌ15.90
See more

If your skin looks flat or patchy, a brightening serum is the answer. A face serum with vitamin C, arbutin, or niacinamide fades dark spots and evens out tone over time. Use it in the morning and never skip sunscreen, which protects the glow you're building.

 

In this serum, rice extract and arbutin work together to brighten and even out tone, an easy way to add soft, luminous radiance.
Title

Face serum for dry skin and dehydration

Tight, flaky, or dull skin is asking for water and comfort, so reach for a hydrating serum. A face serum for dry skin works best on damp skin, sealed in straight away with a cream, and used morning and night for the plumpest, dewiest finish.

 

This serum layers water-rich moisture without feeling sticky, giving dry skin the dewy look glass skin is all about.

Birch Juice Moisturizing Serum

Birch Juice Moisturizing Serum

โ‚ฌ22.33
See more
Title

Face serum for oily skin and shine

DIVE-IN Low Molecular Hyaluronic Acid Serum

DIVE-IN Low Molecular Hyaluronic Acid Serum

โ‚ฌ22.95
See more

Despite what you might think, oily skin still needs hydration, and skipping it can push your skin to make even more oil. A face serum for oily skin should be a lightweight hydrating serum that absorbs fast without a greasy film. Use a few drops on damp skin and follow with a light gel moisturizer.

 

The tiny hyaluronic acid molecules in this serum sink in fast, giving oily skin a big hit of hydration and a fresh, bouncy finish that sits nicely under sunscreen.
Title

Face serum for sensitive skin and redness

Skin that stings, flushes, or reacts easily needs calm before anything else, so choose a soothing serum. Look for a face serum for sensitive skin with a short ingredient list and no fragrance, patch test on your jawline first, and introduce one new product at a time so you can spot any reaction quickly.

 

This serum combines several types of hyaluronic acid to hydrate deeply, giving sensitive skin lasting moisture.

Hyaluronics Serum

Hyaluronics Serum

โ‚ฌ9.99
See more
Title

Face serum for acne and breakouts

Tea Tree Relief Serum

Tea Tree Relief Serum

โ‚ฌ14.25
See more

A face serum for acne with tea tree, centella, or niacinamide helps calm redness without drying you out. And if youโ€™re struggling with dark marks, a brightening serum can help those fade too.

 

This one tackles both redness and breakouts with soothing ingredients like tea tree that calm without leaving skin stripped.
Title

Best face serum for mature skin: fine lines and firmness

The best face serum for mature skin is often a two-part plan: a hydrating serum in the morning and an anti-aging serum at night. Start slowly, with retinol just two nights a week, and build up as your skin adjusts. 

 

This product is a gentle evening retinol that helps smooth texture and soften fine lines, with black rice extract to keep it comfortable.

Black Rice Night Knight Retinol Serum

Black Rice Night Knight Retinol Serum

โ‚ฌ17.42
See more
Title

Face serum for dull skin

The Real Noni Energy Ampoule

The Real Noni Energy Ampoule

โ‚ฌ16.15
See more

Worried about dullness? Look out for a face serum for glowing skin that offers deep hydration with hyaluronic acid, beta glucan, or antioxidant-rich plant extracts. Apply it to damp skin, layer your moisturizer over the top, and use it morning and night. 

 

A great choice, which is made with noni fruit extract to hydrate and give tired skin a fresh, energized look.

Common face serum mistakes to avoid

Even the best face serum can only do so much if these bad habits get in the way. Here's what to watch for, Glowies.

Introducing too many serums at once

Layering several serums can overwhelm your skin, cause irritation, and make it impossible to tell what's actually working. Introduce one or two serums at a time and use them for a few weeks before adding new products into your routine.

Using too much product

A few drops of serum is plenty. Extra product doesn't sink in any deeper. It just sits on top, feels sticky, and can pill under your moisturizer, which wastes serum and makes layering harder.

Skipping sunscreen

Daily SPF matters even more when youโ€™re using serums. Sun exposure can undo the progress your brightening and anti-aging serums make, and retinol can make your skin more sensitive to the sun.

Final tips on how to choose the right serum for you

Finding the right serum for face care doesn't take a full shelf of products. Start small with this simple plan:

  1. Choose one concern. Pick the one thing you'd most like to change, whether that's dryness, dullness, breakouts, or fine lines, and match it to the right serum type.
  2. Patch test, then commit. Try it on your jawline first, then use it consistently for four to six weeks, which is how long most serums need to show real results.
  3. Track your progress. Take a photo in the same light on day one and again after a month so you can see what's actually changing.

Once your skin is happy, add a second serum or an eye serum. Glass skin is built one good habit at a time, Glowies!

FAQs

Should I use face serum every day?

Most serums can be used daily, but always follow the productโ€™s directions.

Do you apply face serum before or after moisturizer?

Before. Apply serum first, then follow with moisturizer.

Can I use two face serums at the same time?

Yes, definitely, as long as the ingredients work well together and your skin tolerates them.

Can I use face serum morning and night?

Yes, although some ingredients are better suited to morning or evening use.

How long does face serum take to work?

It depends on the serum, hydration can feel immediate, while other results may take several weeks.

Do I need both serum and moisturizer?

Ideally, yes. Serum targets specific concerns, while moisturizer helps hydrate and seal in moisture.

Keep reading Our SkinTalks

Title