Instantly hydrates, plumps & firms skin in a lightweight, non-sticky formula What you get: A lightweight hydrating serum that delivers instant and lasting hydration, leaving your skin plump, smooth, and ready for the day. The INKEY cult-favourite hydration serum, clinically proven to deliver instant hydration with 82% of users seeing firmer, smoother skin in just 4 weeks** Why it works: 2% Multi-Molecular Hyaluronic Acid holds up to 1000x its weight in water, delivering intense hydration across multiple layers of skin and helps boosts absorption of other products. Matrixyl™ 3000 Peptide helps to plump, firm and smooth skin. How it feels: Lightweight and hydrating. No greasiness, stickiness, or tackiness. When to use: AM & PM. Use this moisturising serum right after your cleanse. **4-week independent consumer study of 22 people under dermatological control