COSRX The Hyaluronic Acid 3 Serum - 20ml

Cosrx The Hyaluronic Acid 3 Serum is a concentrated hydrating serum with 3% sodium hyaluronate - a high-concentration formulation that plumps, hydrates, and reduces the appearance of fine lines. The formula goes beyond basic hydration with a skin-identical barrier complex: ceramide NP strengthens the lipid barrier, cholesterol and phytosphingosine mimic the skin's natural structure.

A comprehensive NMF (Natural Moisturising Factor) amino acid complex - including serine, alanine, glycine, threonine, arginine, proline, glutamic acid, and lysine - replicates the skin's own moisture system. Lactic acid provides gentle exfoliation. Sodium PCA and sodium lactate bind moisture at the surface. The result is a serum that doesn't just add water to your skin - it teaches your skin to hold onto moisture itself.

Why customers love it

• 3% sodium hyaluronate - concentrated hydration
• Ceramide NP - lipid barrier strengthening
• NMF amino acid complex - mimics skin's natural moisture system
• Cholesterol + phytosphingosine - skin-identical barrier components
• Lactic acid - gentle exfoliation for better absorption
• Sodium PCA + sodium lactate - surface moisture binding
• Lightweight texture - absorbs fast, layers well
• Compact 20ml - concentrated formula, a little goes a long way

Perfect for: dehydrated skin, dry skin, fine lines, barrier repair, all skin types, hydration boost, plumping.

Sodium Hyaluronate (3%) , high-concentration hyaluronic acid for deep plumping hydration

Ceramide NP , barrier-repairing skin-identical lipid

Cholesterol + Phytosphingosine , structural barrier components

NMF Amino Acid Complex , serine, alanine, glycine, threonine, arginine, proline, glutamic acid, lysine

Sodium PCA + Sodium Lactate , natural moisture-binding factors

Lactic Acid , gentle AHA for exfoliation and absorption

Tocopherol , vitamin E antioxidant

1. After cleansing and toning, dispense 2-3 drops onto your palm.
2. Gently pat and press across your face and neck.
3. Follow with moisturiser to seal in the hydration.
4. Use morning and evening.

Pro tip: The 3% concentration is notably higher than most hyaluronic acid serums (which typically contain 0.1-1%). Apply to slightly damp skin, hyaluronic acid is a humectant that draws moisture, so applying to damp skin gives it water to pull into the skin rather than pulling moisture out. The ceramide NP and NMF complex make this more than just a hydrating serum, it's a barrier-repair treatment.