Summary: Laneige Blue Hyaluronic Acid is engineered to solve the problem of poor penetration by using a dramatically smaller molecule. This micro-sized HA, featured in the Water Bank line, passes through the skin's barrier more easily to deliver hydration at a deeper level, rather than just sitting on the surface.

Mechanism of Action The primary challenge with standard hyaluronic acid is its high molecular weight, which keeps it on the epidermis (the outermost skin layer). Laneige's process aims to deconstruct this barrier. Step 1: Fermentation: The process starts with a double fermentation of HA with fucoidan, a moisturizing agent derived from deep-sea algae. Step 2: Microfiltration: The fermented HA undergoes a 10-step microfiltration and refinement process. Step 3: Size Reduction: This 10-step process reduces the HA molecule to what Laneige describes as 1/2000th of its original size. Step 4: Absorption: The resulting "Blue HA" has a low molecular weight, allowing it to penetrate more rapidly and deeply into the skin's layers for internal hydration.

Key Benefits Deep Hydration: Targets inner-skin dryness, not just surface plumping. Barrier Repair: Provides long-lasting moisture to help repair and strengthen the skin's moisture barrier. Fast Absorption: The lightweight formula sinks in quickly without a tacky feel.

Laneige's Blue Hyaluronic Acid works by undergoing a proprietary fermentation and microfiltration process that shrinks the molecule size for deep, effective absorption.