COSRX Hyaluronic Acid 3% Serum 20ml
COSRX Hyaluronic Acid 3% Serum 20ml is a concentrated K-beauty hydrating serum formulated with 3% Hyaluronic Acid and Ceramides to deliver deep moisture, plump the skin, and reinforce the barrier. Fragrance-free, non-comedogenic, and lightweight — suitable for all skin types including sensitive and oily. Designed for dehydrated skin that lacks water regardless of skin type.
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Cosrx Hyaluronic Acid 3% Serum 20ml
Description
COSRX Hyaluronic Acid 3% Serum 20ml
Dehydrated skin is not the same as dry skin — it's a condition where the skin lacks water rather than oil, often presenting as tightness, a dull complexion, and exaggerated fine lines regardless of skin type. COSRX Hyaluronic Acid 3% Serum 20ml is a concentrated K-beauty hydrating serum formulated specifically to target dehydration at its source.
At 3% Hyaluronic Acid, this serum sits in the higher-concentration range for an OTC hydrating serum — delivering a meaningful dose of one of skincare's most well-researched humectants. The lightweight, fast-absorbing formula makes it suitable for all skin types, including oily skin that still needs hydration.
Key Ingredients
- Hyaluronic Acid (3%): A powerful humectant capable of holding up to 1000x its weight in water. At 3%, it draws moisture from the environment and deeper skin layers to the surface, visibly plumping the skin and reducing the appearance of dehydration lines.
- Ceramides: Essential barrier lipids that reinforce the skin's protective layer, sealing in the hydration delivered by HA and preventing transepidermal water loss.
What Makes COSRX HA 3% Different
Many HA serums on the market are diluted or rely on a single molecular weight of HA. COSRX's approach — characteristic of K-beauty — is a concentrated, targeted formula: simple, effective ingredients at meaningful concentrations rather than a long, diluted ingredient list. The 20ml compact size reflects this concentrated philosophy.
Who Should Use This Serum
- Skin that feels tight, rough, or dull despite regular moisturising
- Any skin type experiencing seasonal or environmental dehydration
- Those who want to plump fine lines caused by lack of moisture
- Sensitive skin — fragrance-free and non-comedogenic formula
- Oily and acne-prone skin that still needs hydration without heaviness
Browse more face serums and treatments at Derma.pk, or explore our dry and dehydrated skin collection. For skin barrier support, see our skin barrier products and active treatment serums. Shop all dry skin products for a complete hydration routine.
Usage & Benefits
3% Hyaluronic Acid draws and retains water for immediate visible plumping
Reduces appearance of dehydration lines and surface roughness
Ceramides reinforce the skin barrier to lock in delivered hydration
Lightweight, fast-absorbing formula suitable for all skin types
Fragrance-free and non-comedogenic — safe for sensitive and acne-prone skin
Concentrated K-beauty formula for targeted dehydration correction
Compact 20ml size — ideal for trial or travel
Can be layered under heavier moisturizers for maximum hydration
How To Use
Apply to cleansed skin as an early step in your routine (after toner, before moisturizer).
Dispense a few drops onto fingertips and gently press into face and neck.
Allow to absorb for 30–60 seconds before applying the next product.
Follow immediately with a moisturizer to seal in the HA hydration.
Use morning and evening for best results.
For extra hydration, apply to slightly damp skin — HA binds water more effectively when moisture is present.
FAQs
Why does this say 3% HA when most serums are 1-2%?
COSRX formulates at a higher concentration for targeted efficacy. At 3%, it provides a meaningful hydration boost rather than a cosmetic trace amount.
Should I apply this to damp or dry skin?
Slightly damp skin is ideal — Hyaluronic Acid draws water, so having moisture present (e.g., after a toner) helps it work more effectively.
Do I still need a moisturizer after this serum?
Yes. Always follow a HA serum with a moisturizer to seal in hydration. Without occlusion, HA can pull moisture from deeper skin layers in dry environments.
Is this suitable for oily skin?
Yes. It is lightweight and non-comedogenic. Oily skin still needs hydration — this serum provides it without any heaviness.
How is this different from other COSRX HA serums?
This is the COSRX Hyaluronic Acid 3% Serum in the 20ml compact size (handle: cosrx-hyaluronic-acid-3-serum-20ml). Verify by product title and size before purchasing.
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