From $233.00

Le Grand Sérum has the most concentration of active ingredients, top of all finishing serums.

It gives skin a healthy glow.

Le Grand Sérum is a sublimating elixir, a genuine concentrate of beauty whose action grows more intense with each consecutive application.

It is recommended for all Skin Instants©.

With 27 active ingredients this serum helps prevent premature skin aging, tones, moisturizes and illuminates complexion.

Results are exceptional; plumped up, toned and glowing skin.

When used on mature skin, this serum is to be applied after the recommended creme.


Recommended for Skin Instants© showing signs of epidermal ageing.


  • Helps prevent epidermal premature aging.
  • Tones, revitalizes and calms the epidermis.
  • Helps to strengthen the natural system of skin defence.
  • Brightens the complexion and moisturizes the superior layers of the epidermis.
  • The Biologique Recherche product with the richest content in active ingredients (27), a real ubiquitous serum.
  • Exceptional results that leave the skin plumped up, toned up and luminous.

How to use

To the face, neck and décolleté. Avoid contact with eyes. Apply a few drops of Le Grand Sérum to clean skin all over the face, neck and décolleté with light upward strokes. Use mornings and/or evenings. This product is intended as a final touch of your Biologique Recherche skin care program. Please note that due to its rich composition featuring a high concentration of active ingredients, Le Grand Sérum may be used alone. However, in case of mature skin, it can be applied after the recommended cream.

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