Celluquench complex 4D replenishing serum, is an ultra-low molecular weight Hyaluronic Acid complex that will work immediately, providing 72-hour hydration and an improved cumulative effect with long term use. Active Ingredients Ultra-low molecular weight Hyaluronic Acid 0.25% Saccharide Isomerate 1% Glycogen 0.1% Glycerin 3% Benefits Ultra-low molecular weight hyaluronic acid complex with "shape-shifting" technology. Can increase hydration by 130%. 60 times more soluble than standard hyaluronic acid. 72-hour hydration.