About this product
COSRX The Hyaluronic Acid 3 Serum 20ml is a concentrated hyaluronic acid serum containing three molecular weights of HA to hydrate the skin at every depth simultaneously. The serum applies as a lightweight fluid and immediately plumps fine lines caused by dehydration.
Best for dry, sensitive, normal skin looking to address dehydration, fine lines — with a focus on multi-depth hydration.
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Quick Stats
Key Ingredients
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Product Claims
Common Allergens
Based on confirmed product attributes. Always check the full ingredient list for personal allergens.
Always check the full ingredient list if you have known allergies or sensitivities.
How to Use
- 1Apply to damp skin
- 2Follow with moisturizer
- 3Use twice daily
Dermatologist Note
3% pure sodium hyaluronic acid with amino acids and ceramide; clinically proven hydration.
Based on published clinical literature and dermatological research.
Ingredient Analysis
Full Ingredient List (INCI)
3 ingredientsListed in order of concentration (highest first)
Sodium Hyaluronate, Amino Acids, Ceramide NP
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Disclaimer: The information on this page is for informational purposes only and does not constitute medical or dermatological advice. Always do your own research, consult a qualified professional if you have concerns, and patch test new products before full application — especially if you have sensitive or reactive skin.