ProtoClinical k-beauty COSRX The Hyaluronic Acid 3 Serum 20ml single centered serum bottle on a white background with dark gray packaging
COSRX

COSRX The Hyaluronic Acid 3 Serum 20ml

$17.03
Delivers deep, lasting hydration that keeps skin plump throughout the day Provides intensive moisture that sinks in without heaviness Plumps fine lines from below for a filled-in, youthful look

High strength formula infused with 3% hyaluronic acid


Highly concentrated 3% hyaluronic acid serum that hydrates, plumps, soothes and supports the skin's moisture barrier.

For all skin types dealing with uneven texture: COSRX's serum with Hyaluronic Acid works from within to deliver delivers deep, lasting hydration that keeps skin plump throughout the day, not just temporary comfort.
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Hyaluronic Acid 3%: draws and locks moisture deep within the skin, holding up to 1000x its weight in water
COSRX The Hyaluronic Acid 3 Serum 20ml
COSRX The Hyaluronic Acid 3 Serum 20ml Default Title
$17.03
Ingredient-focused product details Clear use directions Full INCI when available Delivery confirmed at checkout
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Hyaluronic Acid 3%

Hyaluronic acid is a glycosaminoglycan naturally present in the dermis. When applied topically, low-molecular-weight HA penetrates beyond the surface to bind water molecules between skin cells, creating a reservoir effect that keeps skin plump from within. In this serum, Hyaluronic Acid targets uneven texture, delivering delivers deep, lasting hydration that keeps skin plump throughout the day with consistent use.

Hyaluronic Acid 3%
draws and locks moisture deep within the skin, holding up to 1000x its weight in water
Texture

Lightweight, absorbing

All Skin Types
Hover the swatch: it ripples like water

How to use

1

Step 1: After cleansing and toning, press 2 to 3 drops onto fingertips.

2

Step 2: Gently pat and press across forehead, cheeks, nose, and chin.

3

Step 3: Allow 30 seconds for full absorption before the next step.

4

Step 4: Follow with moisturizer. Use sunscreen in the morning.

Full transparency

Ingredients

Hyaluronic Acid draws and locks moisture deep within the skin, holding up to 1000x its weight in water. This focused formula puts all its power behind one proven active for maximum impact.

Hyaluronic acid is a glycosaminoglycan naturally present in the dermis. When applied topically, low-molecular-weight HA penetrates beyond the surface to bind water molecules between skin cells, creating a reservoir effect that keeps skin plump from within. In this serum, Hyaluronic Acid targets uneven texture, delivering delivers deep, lasting hydration that keeps skin plump throughout the day with consistent use.

The detail

Specs & details

FormatLightweight serum
SizeDefault Title
Skin typesAll Skin Types
Country of originSouth Korea
Before you add to cart

Questions & answers

After cleansing and toning, before moisturizer. Serums deliver actives most effectively on freshly prepped skin.
Yes. Apply from thinnest to thickest consistency and allow each layer to absorb before the next.
Most users notice initial improvement within 2 to 4 weeks. For full benefits like delivers deep, lasting hydration that keeps skin plump throughout the day, allow 6 to 8 weeks of consistent use.
Your skin begins adjusting. You may notice improved hydration and comfort before more visible changes like texture refinement become apparent.
Yes, this formula is developed to be compatible with all skin types dealing with uneven texture. If you have very reactive skin, patch test on the inner arm before full application.
The formula is designed to be well-tolerated. For pregnancy-specific concerns, consult your healthcare provider. For sensitive skin, patch test before full application.
Hyaluronic Acid draws and locks moisture deep within the skin, holding up to 1000x its weight in water. Consistent daily use is key to seeing the full benefits.
Check the INCI list for the most accurate information on fragrance components. The formula is developed for minimal irritation potential.
Store in a cool, dry place away from direct sunlight. Use within 12 months of opening for optimal freshness and efficacy.
Serums have a higher concentration of targeted actives than essences and a lighter consistency than most ampoules. They deliver the most potent treatment in your routine.
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