Choosing a glow serum: a practical guide to radiant, even-looking skin

A glow serum can make a dull complexion look visibly fresher and add extra hydration to your routine. However, not every product with “glow” on the packaging works in the same way. Some serums focus mainly on moisture, others on an uneven complexion, while a body product may simply give the skin a temporary golden tint.

Most disappointing purchases happen when the marketing promise seems more important than the formula. With this guide, you can compare a vitamin C serum, brightening serum, hydrating serum or body serum based on verifiable product information.

Three common pitfalls when choosing a glow serum

1. Mistaking a glow for improved skin

A serum may contain light-reflecting particles, oil or a self-tanning ingredient. This can make the skin look instantly shinier or warmer, without the product working in the same way as a serum for an even complexion. So first decide whether you are looking for hydration, a temporary tint or care for dull-looking skin.

2. Using too many active ingredients at once

Vitamin C, acids, niacinamide and retinoid-like ingredients are often combined in skincare routines. More active ingredients do not automatically mean better results. On sensitive skin, introducing several new products at the same time may actually feel uncomfortable. Start with one product and follow the instructions on the packaging.

3. Ignoring application and safety

A glow booster for the body is not the same as a facial serum. For example, the Clarins Radiance-Plus Golden Glow Booster Body must be mixed with a body cream according to the product description and should not be applied on its own. The product contains no sun filters, so it does not protect against sun exposure.

Also pay attention to fragrances, alcohol, acids and ingredients that have caused a reaction for you in the past. If in doubt, apply a small amount to a limited area of skin first. Stop using the product if irritation occurs and avoid contact with the eyes.

Which specifications are important?

1. Consider the purpose and area of application

First choose between face and body:

• Facial serum: usually lightweight in texture and designed to be used after cleansing.
• Hydrating serum: look for ingredients such as glycerine, panthenol, squalane or hyaluronic acid.
• Serum for pigmentation: look for clear information about ingredients such as alpha-arbutin, niacinamide or a vitamin C derivative.
• Body serum: suitable for larger areas of skin, for example to address dryness or an uneven body tone.
• Self-tanning body product: often contains dihydroxyacetone, which temporarily colours the skin. This is not sun protection.

A brand claim about a visible effect should be read as the manufacturer’s statement. According to OGB’s product description, for example, the Miracle Vitamin C Glow Serum is intended to care for an uneven complexion and visible pigmentation. This does not guarantee the same results for every user.

2. Check the concentration and formula

A percentage can help when comparing products, but it does not tell you everything about tolerability. The OGB Vitamin C Glow Serum, for example, states 15% vitamin C. Beauty of Joseon Glow Deep Serum states 2% alpha-arbutin and also contains rice bran water, glycerine, niacinamide and panthenol.

Also consider the form of an ingredient. A vitamin C derivative may be formulated differently from pure ascorbic acid. Always check the full ingredients list and the manufacturer’s instructions. For a serum for sensitive skin, an alcohol-free and fragrance-free formula may be worth looking for, although personal tolerability remains important.

3. Consider the size, texture and cost per use

A 20 or 30 ml bottle may seem affordable, but the daily dosage determines how long it will last. A few drops per use may be enough for a facial serum, whereas a body serum often requires more product.

So compare:

• Size: for example 20, 30, 40 or 100 ml.
• Dosage: dropper, pump or amount per application.
• Texture: watery, gel-like, oily or creamy.
• Time of use: during the day, in the evening or both.
• How it combines with other products: for example mixing it with body cream or following it with a moisturiser.

A product with a fresh-looking finish is not automatically suitable for morning use. When using active ingredients and spending time in the sun, a separate sunscreen with suitable protection is a sensible addition.

Recommended glow serums by user profile

Suitable for: Budget-conscious beginners

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

Why it suits this profile: A lightweight 30 ml serum for anyone who wants to add Korean skincare to their evening routine with ease.

How this product avoids the pitfall

The product information states that it contains 2% alpha-arbutin and has a fragrance-free, alcohol-free formula. This gives you a clearer idea of what the product is designed for than a general glow claim.

Main benefit & advantages

30 ml; with rice bran water, glycerine, panthenol and niacinamide; recommended for evening use.

Suitable for: Shoppers seeking premium quality

Klairs Midnight Blue Youth Activating Drop, 20 ml

Why it suits this profile: Ideal for anyone looking for a concentrated facial serum with a lightweight texture and targeted care.

How this product avoids the pitfall

The product description states that it has a fragrance-free formula and contains hyaluronic acid. According to the brand’s own information, it is intended to hydrate the skin and leave it feeling more comfortable.

Main benefit & advantages

20 ml; with copper peptides and hyaluronic acid according to the product information; stated to be dermatologically tested and vegan.

Suitable for: Specific use & intensive users

Clarins Radiance-Plus Golden Glow Booster Body 30 ml

Why it suits this profile: For anyone who wants to build up the colour intensity of a self-tanning body product gradually.

How this product avoids the pitfall

The dosage is easy to control: the description recommends 4 drops for a subtle tint and 6 for a deeper colour. The product must be mixed with body cream and contains no SPF.

Main benefit & advantages

30 ml; dropper bottle; adjustable colour intensity; with aloe vera according to the product description.

How to use a glow serum in your routine

1. Cleanse your face or body as you normally would.
2. Apply a small amount of serum to the skin.
3. Follow with a moisturiser if the product instructions recommend it.
4. Use a separate sunscreen during the day. A glow serum or self-tanner does not replace UV protection.
5. Introduce new active products one at a time, so you can better assess how your skin reacts.

For a body product, such as an oil serum from NIVEA, even application is important according to the instructions for use. Always consider your own tolerance when using fragranced products. An oily texture may feel more comfortable on dry skin, while a watery or gel-like serum may feel lighter on combination or oily skin.

Frequently asked questions about glow serums

What exactly does a glow serum do?

That depends on the formula. A hydrating serum can temporarily make the skin feel plumper and smoother. A product with light-reflecting ingredients mainly creates an optical effect. A brightening serum containing, for example, vitamin C or alpha-arbutin is intended to care for a dull or uneven complexion. Read the ingredients and product instructions rather than relying solely on the term “glow”.

Can I use a glow serum every day?

Some serums are designed for daily use, but that does not automatically apply to every product. Follow the advice on the packaging. If you are using an active serum, consider starting every other day and do not immediately combine several acids or strong active ingredients. Stop using the product if irritation occurs.

How long does a bottle of serum last?

How long it lasts depends on the size, dosage and area of application. A 20 or 30 ml bottle may last several weeks when using a few drops at a time. A body serum is used up more quickly because you are treating a larger area. Store the product according to the packaging and check the after-opening shelf-life information.