COSRX The Hyaluronic Acid 3 Serum 20ml

COSRX The Hyaluronic Acid 3 Serum 20ml is a Korean hydrating serum that delivers lightweight moisture to thirsty skin, making it particularly useful for those navigating Bangladesh's intense, year-round humidity and hard water conditions. This 20ml formula focuses on one core benefit: replenishing hydration levels without the heavy feel that can complicate routines in our tropical climate. The serum works by attracting and holding water in the skin, which helps maintain that fresh, supple look that humidity and pollution tend to strip away. It's especially suited for anyone dealing with tightness, dullness, or that uncomfortable pull that appears after washing with harsh tap water.

What is COSRX The Hyaluronic Acid 3 Serum 20ml and how does it work

COSRX The Hyaluronic Acid 3 Serum 20ml is a hydrating serum that uses three molecular weights of hyaluronic acid to deliver moisture at different skin depths. The smallest molecules penetrate quickly to provide immediate surface hydration, while the larger molecules form a protective film that helps lock in moisture for longer-lasting comfort. Hyaluronic acid is a naturally occurring substance in the skin that can hold up to 1000 times its weight in water. By attracting and binding water molecules, it helps plump the appearance of fine lines and improves skin texture. The three-weight approach ensures both instant relief and sustained hydration throughout the day.

This formulation is designed to layer easily under other products without pilling or leaving a sticky residue. The lightweight texture absorbs within minutes, making it ideal for morning routines when you need something that works quickly before heading out into the heat. The serum also helps support the skin barrier by maintaining optimal hydration levels, which is essential when dealing with environmental stressors common in urban settings.

Best for

• Dehydrated skin that feels tight or looks dull despite using moisturisers
• Combination or oily skin types that need hydration without added heaviness
• Early signs of fine lines caused by dryness or environmental exposure
• Skin recovering from over-exfoliation or active-based treatments
• Anyone building a basic skincare routine in Bangladesh's climate
• Mature skin seeking lightweight hydration to support elasticity

While COSRX The Hyaluronic Acid 3 Serum 20ml is gentle, those with very sensitive skin or known hyaluronic acid allergies should patch test on a small area first, especially when layering with other actives.

How to apply it

1. Dispense 2-3 drops onto clean, slightly damp skin after cleansing and toning
2. Gently pat and press the serum into your face and neck using fingertips — avoid rubbing
3. Allow 30-60 seconds for full absorption before applying moisturiser
4. Use morning and night; always follow with broad-spectrum SPF in the morning
5. During monsoon months, apply to damp skin for enhanced hydration benefits

What to expect over time

Results from COSRX The Hyaluronic Acid 3 Serum 20ml develop gradually with consistent use. Most people notice improved skin comfort and reduced tightness within the first week, while visible plumping and smoother texture typically appear after 2-3 weeks of twice-daily application. Like all hydrating products, the key is regular use rather than intensive application. The serum works best as part of a complete routine that includes proper cleansing and sun protection — especially important given Bangladesh's strong UV exposure throughout the year. Storing it in a cool, dry place away from direct sunlight helps preserve the stability of the hyaluronic acid formula.

Check on Delivery: Inspect the product carefully when you receive your order. Packaging can vary between batches while the product remains the same original item.

Storage: Store in a cool, dry place away from direct sunlight. Keep out of reach of children. Check expiry date on packaging before use.

Patch Test: If you have sensitive skin, apply a small amount to your inner wrist and wait 24 hours before full use. Stop use if irritation occurs.

• Hyaluronic Acid