Net weight: 30ml/ 1oz. Brand new- Never used: smoke free and pet free home. Hydrating Serum is a unique formula with high, low, and super low molecular weight hyaluronic acids that protect, hydrate and repair. This serum improves the skin's natural balance and plumps where skin is lacking in hydration. It keeps skin from showing signs of premature aging by preventing lines from deepening and reducing the appearance of wrinkles. Revitalizes dull, dry skin.