You've probably asked yourself in front of the mirror: with a good cleanser and a complete moisturizer, is one more step necessary? If you're wondering what a facial serum is and what it's for, the answer lies in its ability to act and adapt to your skin's specific needs, such as hydration or radiance.
In the Twelve Beauty universe, understanding what a facial serum is and what it's for completely changes your routine. Serum is not an "extra" step; it's added value. In the words of our formulator, Pedro Catalá:
I understand a serum as a navigator that guides your skin to your desired goal, quickly, effectively, and safely, whether it's reducing hyperpigmentation, improving facial sagging, or enhancing radiance.
How we formulate serums at Twelve Beauty
To better understand what a facial serum is and what it's for, it's key to know its formulation. Pedro Catalá states: “The basic concept is very light-textured formulas loaded with functional active substances in their maximum doses.”
This is where many of the benefits of facial serum over a cream lie: higher concentration of active ingredients, better absorption, and more visible results in less time. In our case, we work with everything from hyaluronic acid-based gels (key in any hydrating serum) to light emulsions that provide an ethereal feel.
As always, every ingredient has a purpose, and this category fits perfectly with our formulating mantra. If you're researching what a facial serum is and what it's for, here you'll find the answer: precision, efficacy, and adaptation to every skin type.
A serum for every mood (and skin condition)
If you already know what a facial serum is and what it's for, you'll understand that not all of them work the same way or address the same needs. The benefits of facial serum depend on its active ingredients and how they adapt to your skin's needs at any given moment.
Not all skin types need the same thing every day. That's why, at Twelve Beauty, we have designed specific solutions that respond to concrete biological needs:
Ideal Moisture Level Serum
The hydrating essential
An ultra-lightweight serum designed to keep skin supple, hydrated, and comfortable throughout the day. It helps retain water, strengthen 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 on the skin's surface that helps maintain elasticity and reduce water loss.
Plant saccharide
Binds to cutaneous keratin to prolong hydration even after water exposure.
Mallow
Rich in mucilage, it helps to calm and soften the skin while providing extra hydrating comfort.

Ideal Rebalancing Level Serum
The harmonizer
An oil-free elixir with a light texture that helps regulate excess sebum without compromising hydration. It rebalances the skin, improves the appearance of pores, and promotes a more stable skin ecosystem.
Willowherb
A botanical active known for its sebum-regulating action, ideal for helping to balance combination or oily skin.
Hyaluronic acid
Provides lightweight hydration without feeling heavy, helping to keep skin comfortable and more even-toned.
Rebalancing botanical actives
Work to promote more stable and refined skin, improving overall appearance without a drying effect.

Ideal Brightening Corrective Serum
The radiance renovator
An intensive formula developed for skin with dark spots, post-acne marks, or uneven tone. It combines highly effective botanicals to help reduce the appearance of hyperpigmentation, provide clarity, and protect against oxidative stress.
Lemon Balm
Helps protect skin against oxidative stress and supports processes that promote a more even tone.
Lady’s Mantle
Botanically valued for its ability to contribute to visibly brighter and more balanced skin.
Yarrow
Helps improve the appearance of marks and support more homogeneous and serene skin.
Plant Perfection Gel Serum
The botanical architect
Our botanical alternative to retinol. A formula designed to improve skin firmness, radiance, and visual quality, helping to smooth fine lines and strengthen the appearance of skin structure with especially gentle tolerance.
Bidens pilosa
A botanical active known to act on similar pathways to retinol, helping to improve skin renewal without its usual irritating profile.
Tetrapeptides
Contribute to improving the appearance of firmness and supporting more toned-looking skin.
Microalgae and plant amino acids
Work in synergy to promote more flexible, radiant skin with a better sensation of lift.

B12 Calm Serum
The active calming serum
A vegan and fragrance-free serum formulated to visibly reduce redness, soothe feelings of discomfort, and strengthen the skin barrier. Its light texture leaves skin looking more even, clear, and comfortable.
Vitamin B12
Contributes to calming irritated skin and improving comfort in particularly sensitive or reactive skin types.
Calming botanical extracts
Help reduce the appearance of redness and support the recovery of more balanced skin.
Marine ferment
Provides a softening and perfecting action that leaves skin looking more rested and even.

How to use a facial serum correctly?
Now that you know what a facial serum is and what it's for, as well as all the types and needs we address at Twelve Beauty, the next step is to understand how to integrate it into your facial routine and take advantage of all the benefits of a facial serum.
For your facial serum to be 100% effective, Pedro Catalá reminds us of a golden rule:
The magic happens when you apply the serum to slightly damp skin (for example, after your floral toner) or mixed with your favorite facial oil. This facilitates the penetration of the active ingredients and enhances tissue elasticity.
This point is key in any facial routine with serum: apply it at the right time (before cream) and allow its active ingredients to act deeply.
Twelve Beauty Tip: less is more. 3 or 4 drops are enough for the face, neck, and décolletage.
If you still have doubts about what a facial serum is and what it's for, the answer lies in how your skin responds. Incorporating it into your routine not only improves hydration or luminosity, but also allows specific needs to be treated with greater precision.
Skin changes constantly, and understanding what a facial serum is for allows you to adapt to it at all times. If you still have doubts, we will be happy to help you find the most suitable serum for your skin.