Serum Yall-O2

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Biologique Recherche Serum Yall-O2 naturally plumps the skin to create a full appearance around the face and lips. Formulated with hyaluronic acid and marine collagen, this unique plumping serum is a great addition to your routine to fight aging and dehydration. The larger molecules of this unique serum help protect the skin while allowing the products applied beneath to penetrate the skin better, leaving the complexion regenerated and refreshed.

Biologique Recherche Serum Yall-O2 Benefits

A real shock treatment to boost hydration, Biologique Recherche Serum Yall-O2 contains ultra-high doses of hyaluronic acid and antioxidant plant extracts. This intensely hydrating treatment provides the amount of moisture skin needs to function properly and feel comfortable. The effect is instant, as the fine lines caused by dehydration are plumped up.

About Biologique Recherche

Biologique Recherche is a French skincare company that has spent over 40 years, creating some of the most effective masks, cleansers, toners, and creams. Coveted worldwide for all-natural skincare solutions, Biologique Recherche is known for its innovative and tailored approach to skincare. Biologique Recherche creates products that don’t just address basic skin types and account for how skin changes both over time and within a single day.

Discover Biologique Recherche Skincare

Explore our vast selection of Biologique Recherche products available exclusively at Ciel Spa. To determine which formulation is right for your skin's unique needs, schedule a personalized skin analysis with one of our expert estheticians. If you have any questions about which Biologique Recherche skincare products are best suited to your skin type, contact us today.

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Additional information


.03oz, 1oz


Fundamental hydration elixir.


Recommended for skin that is dehydrated and lacking in lipids.


  • Apply 4 to 5 drops to the entire face, neck, and cleavage in the morning and/or at night.
  • Use finishing Serum Yall-O2 as the final touch to your skincare regimen.


Water (Aqua), Perfluorodecalin, Coco-Caprylate, Isocetyl Stearate, Maltodextrin, Xylitylglucosides, Sodium Hyaluronate, Anhydroxylitol, Polyperfluoromethylisopropyl Ether, Xylitol, Poloxamer 188, Rhizobian Gum, Punica Granatum Fuit Extract, Acacia Senegal Gum, Lilium Candidum Flower Extract, Juglans Regia (Walnut) Seed Extract, Hibiscus Sabdariffa Flower Extract, Juglans Regia (Walnut) Shell Extract, Carum Carvi (Caraway) Fruit Oil, Citric Acid, Propylene Glycol, Polyacrylamide, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, C13-14 Isoparaffin, Chlorphesin, Xanthan Gum, Ethylhexylglycerin, Laureth 7, Sodium Benzoate, Sorbitan Isostearate, Polysorbate 60, Phenoxyethanol, Potassium Sorbate, Sodium Metabisulfite, Limonene.

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