What is the purpose of a facial serum?

A serum is that discreet gesture that gently transforms the skin without it immediately understanding how. A few drops, a fine texture that disappears in seconds… and yet, the epidermis reacts almost instantly: restored radiance, more even texture, enhanced comfort.
In a skincare routine, it's often the one that makes the difference.

Quick answer: A serum targets a specific skin need (hydration, blemishes, wrinkles, imperfections, or redness) thanks to a high concentration of active ingredients impossible to achieve in a simple cream. Its fluid texture allows for deep penetration , faster action, and optimization of all subsequent skincare products.

The benefits of a serum

A This serum is a true booster: just a few drops are enough to provide what the skin needs, precisely when it needs it most. Its light texture glides on, absorbs in seconds, and leaves skin ready for the rest of your skincare routine.

Here's what this concentrated blend of active ingredients actually delivers:

Deeper hydration

Thanks to ingredients like hyaluronic acid (naturally present in the body), the serum retains water in the deeper layers of the skin.
The result: a softer texture, less visible dehydration lines and immediate comfort.

Improved absorption of the following skincare products

Thanks to its fine texture, the serum prepares the skin: it facilitates the penetration of the moisturizer or night cream and improves the effectiveness of the entire routine.

An overall improvement in the appearance of the skin

With daily use, morning and evening, the skin becomes more even:

• The complexion becomes more radiant.
• The pores appear refined.
• Wrinkles soften,
• The marks and redness fade.

A serum does not act on the surface: it works deep within the skin tissue to permanently transform the appearance of the skin.

Why use a serum?

If there's one skincare product that can adapt to every skin type, it's serum. Its strength lies in its precision: it doesn't just hydrate or soften, it addresses a specific need thanks to a combination of highly concentrated active ingredients.
It is often this small bottle that marks the real turning point in a beauty routine.

Because a serum works where a cream cannot

Its fluid texture plays a fundamental role: it transports the active ingredients into the deeper layers of the skin.
The cream, on the other hand, protects and maintains surface hydration.
The two work together, but the serum takes the first step.

Because it deals with a specific problem

Brown spots, acne, redness, wrinkles, dehydration, loss of radiance…
Each skin type presents a unique challenge.
The serum allows you to target exactly this need thanks to a main ingredient designed for it: hyaluronic acid to plump, salicylic acid to smooth imperfections, vitamin C to illuminate, niacinamide to soothe.

Because it improves the results of the daily routine

Applying a serum provides a real boost to the effectiveness of the moisturizer.
Skin that is better prepared absorbs better, reacts better, and regains a radiant appearance more quickly.
This synergy explains why the combination of serum and cream gives more visible results than a treatment alone.

Because a serum adapts to all skin types

Even sensitive skin can incorporate it into their routine, provided they choose a gentle and suitable formula.
Lightweight textures prevent overloading the skin, an essential point for those who react easily.

Because only a small amount is needed

A few drops warmed between the fingers allow for a quick and even application.
This simple gesture, repeated morning and evening, offers the skin a consistency that gradually changes its appearance.

The different types of serum

Every skin type goes through phases, needs, and variations depending on stress, environment, or age. Serum then becomes a valuable ally: a few drops are enough to target a specific need thanks to a high concentration of active ingredients. Here are the main categories of facial serums and what they truly offer.

Anti-aging serum: smooths, redensifies, supports firmness

When skin loses elasticity, wrinkles appear and the oval shape sags, an anti-aging serum helps to stimulate the internal mechanisms of skin tissue.

Most effective active ingredients:

• peptides,
• retinol-like,
• antioxidants,
• collagen boosters.

Observed effects:
Firmer skin, softened fine lines, redefined facial contours.

Garancia recommendation:
[Polar Star] – ideal for mature skin and during menopause, with a real redensifying effect.

Firming serum: regain tone and bounce

Loss of firmness doesn't spare young skin: stress, hormonal fluctuations, or fatigue can all diminish facial tone. The firming face serum acts as a true structural support, helping to tighten the skin and visibly smooth features.

Most effective active ingredients:

• plant-based collagen
• retinol-like,
• hyaluronic acid,
• regenerating extracts.

Observed effects:
Skin tightened, volume better maintained, oval more toned.

Garancia recommendation:
[MYSTERIOUS Plumping] – a lifting treatment that plumps, improves skin density and provides an immediate rebound effect.

Radiance serum: illuminates, evens out skin tone, awakens radiance

The complexion can lose its freshness, become uneven or dull.
A This radiance serum instantly revives the light on the face and evens out the skin's surface.

Key assets:

• vitamin C
• antioxidant fruit extracts,
• beta-carotene,
• niacinamide.

Observed effects:
Brighter complexion, refined texture, immediate radiance.

Garancia recommendation:
[THE CALL OF THE WILD] Dual Phase Serum – perfect for giving a natural radiance boost, even on tired skin.

Hydrating face serum: plumps and soothes dry skin

Dehydration shows quickly: tightness, fine lines, dull skin.
A hydrating serum restores water to the epidermis and strengthens the protective barrier.

Key assets:

• hyaluronic acid,
• vitamin B5
• self-hydrating complexes.

Observed effects:
Skin is plumped, comfort is restored, and suppleness is improved.

Garancia recommendation:
[DIABOLIQUE TOMATO] Babyskin Serum – retains water for up to 72 hours, ideal for restoring deep hydration.

Anti-blemish serum: purify, smooth, regulate

For skin prone to pimples, blackheads and enlarged pores, an anti-blemish serum helps to rebalance sebum while refining skin texture.

Targeted assets:

• salicylic acid
• zinc PCA
• niacinamide,
• natural exfoliating acids.

Observed effects:
Fewer imperfections, smoother skin, tightened pores.

Garancia recommendation:
[THE MARABOUT'S ELIXIR] – very effective on adult imperfections, while also providing an anti-aging smoothing effect.

Blue light face serum: protect and strengthen skin stressed by screens

The blue light emitted by phones, computers and LED lights accelerates oxidative stress, tires the complexion and can accentuate spots.

A blue light serum acts as an antioxidant shield to protect the epidermis from HEV rays and maintain a luminous complexion despite daily exposure.

Protective agents:

• vitamin C
• polyphenols,
• antioxidant plant extracts,
• hyaluronic acid.

Observed effects:
more even complexion, less dull skin, reduction of the effects of digital stress.

Garancia recommendation:
[THE CALL OF THE WILD] Dual Phase Serum – rich in antioxidants to counteract the effects of blue light and revive radiance.