Sérum Source Profonde takes its name from the Maison itself — because deep hydration is at the heart of everything we formulate. This is our flagship hyaluronic serum: a four-tier molecular system designed to hydrate, replenish, and restore the skin's moisture architecture with exceptional precision.

Most hyaluronic serums function at one level. This formula works at four. Sodium Hyaluronate Crosspolymer forms an invisible moisture veil across the surface. Standard Sodium Hyaluronate penetrates the upper layers for immediate comfort. Sodium Acetylated Hyaluronate binds directly to skin for prolonged hydration. Hydrolyzed Sodium Hyaluronate, with its smaller molecular size, reaches deeper layers where conventional hydration rarely goes.

Together, these four molecular weights create a continuous hydration cascade — from first touch to lasting suppleness.

The result is not skin that simply feels moisturised. It is skin that appears replenished, smooth, and visibly alive with water.

Key Ingredients

1. Sodium Hyaluronate Crosspolymer — Surface moisture lock
2. Sodium Hyaluronate — Upper-layer hydration
3. Sodium Acetylated Hyaluronate — Cell-binding long-wear hydration
4. Hydrolyzed Sodium Hyaluronate — Deeper dermal hydration support
5. Four Molecular Weights — Multi-depth hydration architecture

Full Ingredients:Water, Propanediol, Glycerin, Sodium Hyaluronate Crosspolymer, Sodium Hyaluronate, Sodium Acetylated Hyaluronate, Hydrolyzed Sodium Hyaluronate, Pentylene Glycol, Xantham Gum, Sorbitan Oleate Decylglucoside Crosspolymer, Phenoxyethanol, Ethyhexylglycerin.

Apply a small amount to clean, dry skin and massage until absorbed. Layer under moisturiser. 30ml.