What a face serum does for your skin
It is a fair question, and one many people ask themselves in front of the mirror: if you already use a good cleanser and a well-formulated moisturiser, do you really need an extra step? If you have been wondering what a face serum does, the answer lies in its ability to target specific skin concerns with precision, whether that means supporting hydration, improving radiance or addressing visible signs of ageing.
At Twelve Beauty, understanding what a face serum does can completely change the way you see your routine. A serum is not an unnecessary extra, but a purposeful step designed to respond to the skin’s changing needs. In the words of our formulator Pedro Catalá:
I understand a serum as a navigator that guides your skin towards the goal you want to achieve, in a fast, effective and safe way, whether that is reducing hyperpigmentation, improving skin firmness or enhancing luminosity.
How we formulate serums at Twelve Beauty
To better understand what a face serum does, it helps to look at how it is formulated. As Pedro Catalá explains, serums are built around light textures with a high concentration of functional actives used at effective levels.
This is where many of the benefits of a face serum lie when compared with a cream: a higher concentration of active ingredients, fast absorption and a more targeted approach. At Twelve Beauty, we work with everything from hyaluronic acid-based gels to lightweight emulsions with an airy, elegant finish.
As always, every ingredient has a purpose, and this category reflects our formulation philosophy particularly well. If you have been asking what a face serum does, the answer is rooted in precision, efficacy and adaptability to the skin’s changing condition.
A serum for every mood (and skin type)
At Twelve Beauty, each serum responds to a specific biological need of the skin. More than a single category, we understand serums as precision tools: lightweight textures, high functionality and a clear purpose depending on what the skin needs at any given moment.
Ideal Moisture Level Serum
The essential hydrator
An ultra-light serum designed to keep skin supple, hydrated and comfortable throughout the day. It helps retain moisture, support the skin’s surface barrier and protect against dehydration associated with heating, air conditioning or urban environments.
High molecular weight hyaluronic acid
Forms a breathable film over the skin’s surface to help maintain elasticity and reduce transepidermal water loss.
Plant-derived saccharide
Binds to skin keratin to prolong hydration, even after exposure to water.
Mallow
Rich in mucilage, it helps soothe and soften the skin while enhancing overall hydration comfort.
Ideal Rebalancing Level Serum
The harmoniser
A light, oil-free elixir that helps regulate excess sebum without compromising hydration. It rebalances the skin, improves the appearance of pores and supports a more stable skin ecosystem.
Epilobium
A botanical active known for its sebum-regulating properties, particularly suited to combination or oily skin.
Hyaluronic acid
Provides lightweight hydration without heaviness, helping skin feel more comfortable and refined.
Rebalancing botanical actives
Work together to support a clearer, more even-looking complexion without a drying effect.
Ideal Rebalancing Level Serum
The harmoniser
A light, oil-free elixir that helps regulate excess sebum without compromising hydration. It rebalances the skin, improves the appearance of pores and supports a more stable skin ecosystem.
Epilobium
A botanical active known for its sebum-regulating properties, particularly suited to combination or oily skin.
Hyaluronic acid
Provides lightweight hydration without heaviness, helping skin feel more comfortable and refined.
Rebalancing botanical actives
Work together to support a clearer, more even-looking complexion without a drying effect.
Ideal Brightening Corrective Serum
The radiance renewer
An intensive formula developed for skin affected by dark spots, post-acne marks or uneven tone. It combines high-performance botanicals to help reduce the appearance of pigmentation, restore clarity and protect against oxidative stress.
Lemon Balm
Helps protect the skin against oxidative stress while supporting a more even and radiant appearance.
Lady’s Mantle
A botanical traditionally valued for helping improve visible luminosity and tone balance.
Yarrow
Helps improve the appearance of marks while supporting a calmer, more even complexion.
Plant Perfection Gel Serum
The botanical architect
Our botanical alternative to retinol. A formula created to improve firmness, radiance and the overall visual quality of the skin, while helping soften expression lines and support skin structure with a particularly respectful level of tolerance.
Bidens pilosa
A botanical active known to work on pathways similar to retinol, helping support skin renewal without the usual irritation profile.
Tetrapeptides
Help improve the appearance of firmness and support skin that looks more toned and resilient.
Microalgae and plant amino acids
Work in synergy to support a more flexible, luminous complexion with an enhanced sense of structure.
Plant Perfection Gel Serum
The botanical architect
Our botanical alternative to retinol. A formula created to improve firmness, radiance and the overall visual quality of the skin, while helping soften expression lines and support skin structure with a particularly respectful level of tolerance.
Bidens pilosa
A botanical active known to work on pathways similar to retinol, helping support skin renewal without the usual irritation profile.
Tetrapeptides
Help improve the appearance of firmness and support skin that looks more toned and resilient.
Microalgae and plant amino acids
Work in synergy to support a more flexible, luminous complexion with an enhanced sense of structure.
B12 Calm Serum
The active calming serum
A vegan, fragrance-free serum formulated to visibly reduce redness, relieve discomfort and support the skin barrier. Its lightweight texture absorbs quickly, leaving skin looking more even, soothed and comfortable.
Vitamin B12
Helps calm stressed skin and improve the feeling of comfort in particularly sensitive or reactive complexions.
Soothing botanical extracts
Help reduce the visible appearance of redness and support the skin’s return to balance.
Marine ferment
Provides a smoothing, refining effect that leaves the skin looking fresher and more rested.
How to use a face serum properly
Once you understand what a face serum does, the next step is knowing how to use it correctly within your routine in order to make the most of its benefits.
For a face serum to perform at its best, Pedro Catalá reminds us of one essential rule:
The magic happens when you apply your serum onto slightly damp skin, for example after your floral mist, or when mixed with your favourite facial oil. This helps the active ingredients penetrate more effectively and improves the elasticity of the tissue.
This is a key point in any serum routine: apply it at the right moment, usually before your cream, and allow its active ingredients to work with greater precision.
Twelve Beauty tip: less is more. Three or four drops are enough for the face, neck and décolleté.
So, what a face serum does?
If you are still asking what a face serum does, the answer is simple: it helps the skin respond more precisely to what it needs at any given moment. Whether the priority is hydration, radiance, firmness or visible calm, a serum allows you to address those concerns with a lighter texture and a more concentrated functional profile.
Skin is constantly changing. Uunderstanding what a face serum does allows you to adapt your routine with greater intention. If you are still unsure which one is right for you, we will be delighted to help you find the serum best suited to your skin.
