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Serum Yall O2
Serum Yall O2 — 2
Serum Yall O2 — 3
Serum Yall O2 — 4
Biologique Recherche

Serum Yall O2

Intense hydration with an instant plumping effect

Choose your size
€100.00

VAT included

In stock

Free shipping from €100 · Free pickup at the centre (Diagonal 369)

Finishing serum with a high dose of hyaluronic acid and oxygenating actives. Plumps, smooths and brightens dehydrated skin. 8 ml size.

  • Deep hydration with instant plumping
  • Fine lines less marked
  • More elasticity and radiance
  • Genuine productAuthorised distributor of every brand in Spain
  • Delivery in 24–48 hMainland Spain, 1–2 working days · free from €100
  • 14-day returnsUnopened, seal intact
  • Free pickup at the centreAvenida Diagonal 369 · Monday to Saturday
  • Secure paymentEncrypted and verified by Revolut
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  • Revolut Pay

Questions about this product?

One of our aestheticians replies during centre hours.

Ask on WhatsApp

About the product

Sérum Yall~O2 is a finishing serum, meaning it goes on at the end of the routine, and it is one of those you feel the moment you apply it. It combines hyaluronic acids of different molecular weights with antioxidant plant extracts and oxygenating vectors, to hydrate deeply and give the skin that plumped, luminous look.

Four or five drops over face, neck and décolleté are enough. The texture is silky, melts into the skin and leaves fine lines less marked and the whole face more elastic. The instant effect extends with regular use.

At 8 ml it is perfect for trying it or for flights and travel, where skin dehydrates most.

What it does

  • Deep hydration with instant plumping
  • Fine lines less marked
  • More elasticity and radiance
  • Ideal for flights and dry climates

How to use

  1. Morning and/or evening, as the last step of the routine, press 4–5 drops into face, neck and décolleté.

Key actives

  • High and low molecular weight hyaluronic acidhydrates and plumps
  • Chaperone proteins from glacier microorganismsvisible plumping
  • Lupin lipopeptidesbring radiance

Suitable for

Dry skinMature skinAll skin types

Works on

DehydrationWrinkles and firmnessLack of radiance

Ref. JADE-22590290

Customer reviews

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We only publish reviews from verified purchases: every customer gets a link to rate their products a few days after delivery.

Meanwhile, the centre holds 4.9 out of 5 on Google across 398 reviews.

Frequently asked questions

Is this a genuine product?

Yes. Everything in the shop comes from the official Biologique Recherche distributor in Spain — the same stock our aestheticians use in the treatment room at Avenida Diagonal 369.

When will it arrive?

We ship within 24 hours on working days and delivery takes 1–2 working days in mainland Spain. Shipping is free from €100; below that it's €4.90. You can also collect it for free at the centre.

Can I return it?

Yes, within 14 days of delivery as long as the product is unopened and the seal is intact. For hygiene reasons opened cosmetics can't be returned, unless they arrived damaged or wrong — then we sort it out at our cost.

Is it right for my skin?

Not sure? Write to us on WhatsApp with a photo of what you're using now and one of our aestheticians will tell you whether this product fits your routine — or what to use instead.

How do I pay?

By card (Visa, Mastercard), Apple Pay, Google Pay or Revolut Pay. Payment is processed by Revolut with full encryption; we never see your card details.

Suggested full routine

Three steps that work together, chosen by our aestheticians within the same brand whenever possible. If your skin is particular, ask us first.

  1. 1Lait EV

    Cleanse

    Lait EV150 ml

    Clean skin so the rest absorbs properly

    €55.00
  2. 2Serum Yall O2

    Treat

    Serum Yall O28 ml

    this product

    €100.00
  3. 3Emulsion Pigm 400 SPF 15

    Protect

    Emulsion Pigm 400 SPF 1550 ml

    SPF every morning, always

    €215.00
3 products · €370.00
Prefer a routine built for your skin? Take the test →
Treatments at our centre

We use it in cabin for

This brand is part of our protocols. If you visit the centre you can try it before buying.

See all treatments →
Professional skincare · our Barcelona centre

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