Hyaluronic Acid Serum For Deep Hydration
COSRX The Hyaluronic Acid 3 Serum is a lightweight Korean skincare serum formulated with 3% pure hyaluronic acid to deeply moisturise dry and dehydrated skin. This hydrating formula helps improve moisture retention while supporting a plump, dewy and smoother looking complexion.
The low molecular weight formula helps deliver hydration into the skin while supporting the appearance of improved elasticity. With added NMF, amino acid complex and ceramide, this serum also helps care for the skin moisture barrier and protect the skin from external stressors.
Hydration Support For Dry Skin
This deeply moisturising serum is ideal for customers wanting a simple and effective formula for dry, dehydrated or moisture lacking skin. The fluid texture absorbs comfortably, making it suitable for daily skincare routines.
Because this formula helps retain moisture, it can support a smoother and more supple complexion. It is especially beneficial for skin that looks dull, tired, tight or dehydrated.
Hyaluronic Acid Serum Benefits
- Deeply moisturising Korean face serum
- Formulated with 3% pure hyaluronic acid
- Helps hydrate dry and dehydrated skin
- Supports moisture retention for a plump complexion
- Helps reduce the visible signs of wrinkles
- Supports improved skin elasticity
- Helps prevent the look of sagging skin
- Promotes a smooth, dewy and healthy looking finish
- Infused with NMF, amino acid complex and ceramide
- Helps support the skin moisture barrier
- Helps protect the skin from external stressors
- Lightweight, fluid texture
- Ideal for dry and dehydrated skin
Plump And Dewy Skin Support
This serum is designed to boost skin moisture and support a fresh, dewy looking finish. First, cleanse and tone the skin. Next, apply a suitable amount of serum to the face. Then, gently pat into the skin until absorbed.
For best results, follow with a moisturiser to help seal in hydration. This makes the serum a practical choice for morning and evening routines focused on moisture, comfort and skin barrier support.
Key Hyaluronic Acid Ingredients
- 3% Pure Hyaluronic Acid: Helps deeply hydrate the skin, retain moisture and support a plump, dewy complexion.
- Low Molecular Weight Formula: Helps deliver hydration into the skin for improved moisture support.
- NMF, Amino Acid Complex: Helps support the skin’s natural moisture balance and improve skin comfort.
- Ceramide: Helps support the skin moisture barrier and protect against external stressors.
How To Use This Korean Serum
- Use after cleansing and toning.
- Apply a suitable amount to the face.
- Gently pat into the skin until absorbed.
- Follow with moisturiser to help seal in hydration.
- Use morning and evening as part of a daily skincare routine.
- Apply sunscreen during the day as the final step of your morning routine.
Product Details
- Product Name: COSRX The Hyaluronic Acid 3 Serum
- Size: 20ml
- Product Type: Korean hydrating face serum
- Key Ingredient: 3% pure hyaluronic acid
- Additional Ingredients: NMF, amino acid complex and ceramide
- Suitable For: Dry, dehydrated and moisture lacking skin
- Benefits: Hydration, moisture retention, elasticity support, plumpness and barrier care
- Texture: Lightweight, fluid and comfortable
- Made In: Korea
- Authenticity: All our products are 100% authentic
Important Hyaluronic Acid Information
This Korean hydrating serum is suitable for skincare routines focused on hydration, moisture support and smoother looking skin. To help maximise results, apply the serum before moisturiser so hydration can be sealed into the skin.
If you are introducing this product into your routine for the first time, patch testing is recommended. Discontinue use if irritation occurs.
Shop More Korean Skincare
For more Korean skincare products, explore our COSRX range. You can also learn more about hyaluronic acid in skincare from Paula’s Choice.
Serum Use Information
Overall, this lightweight hydrating serum is suitable for customers wanting softer, smoother and more moisturised skin. It is ideal for dry and dehydrated skin types and supports a plump, dewy complexion with daily use.




