COSRX The Hyaluronic Acid 3 Serum 20ml

A triple weight hyaluronic acid serum that hydrates at every depth for plump, dewy skin.

Regular price €32.00

Complete Your Routine
Glow Guide
  • Triple-weight HA hydrates at every skin depth
  • Plumps and smooths dehydration fine lines
  • Strengthens the skin barrier
  • Layers easily under moisturiser or SPF
  • A water-based texture with no pilling or greasiness
Who's It For

Suitable for all skin types, especially anyone whose skin looks dehydrated or is prone to fine lines.

Description
GLOW GUIDE
  • Triple-weight HA hydrates at every skin depth
  • Plumps and smooths dehydration fine lines
  • Strengthens the skin barrier
  • Layers easily under moisturiser or SPF
  • Suitable for all skin types
DESCRIPTION

The COSRX Hyaluronic Acid 3 Serum uses three different molecular weights of hyaluronic acid to deliver moisture at multiple depths within the skin. Low molecular weight HA penetrates deep into the dermis to hydrate from within and smooth fine lines. Mid molecular weight HA improves overall moisture balance and skin resilience. High molecular weight HA forms a breathable film on the surface to lock in hydration and protect against moisture loss.

The result is skin that looks visibly plumper, feels softer and has a healthy, dewy glow. The water-based texture layers seamlessly under other products without pilling or greasiness.

HOW TO USE
  1. After cleansing and toning, apply to slightly damp skin for maximum absorption.
  2. Dispense 2 to 3 drops onto fingertips and gently press and pat onto the face and neck.
  3. Follow immediately with a moisturiser to seal in hydration. Use morning and evening.
ABOUT THE BRAND

COSRX, short for Cosmetics and Rx, is a South Korean skincare brand founded in 2013. Known for ingredient focused formulas that strip back unnecessary additives, COSRX quickly became one of the most trusted names in K-Beauty. Their range addresses a wide variety of skin concerns including acne, sensitivity, ageing and hyperpigmentation, all with a commitment to transparency and skin science.

SkinShop.ie is Ireland's leading destination for authentic Korean skincare. As official COSRX stockists, we carry the full range with fast delivery across Ireland and the EU. Shop the complete Korean skincare collection at SkinShop.ie.

INGREDIENTS

Please Note: For an accurate listing of ingredients in each product, please refer to your product packaging prior to use. SkinShop also recommends all products are patch-tested 24 hours before application.

How to Use

After cleansing and toning, apply to slightly damp skin for maximum absorption. Dispense 2 to 3 drops onto fingertips and gently press and pat onto the face and neck. Follow immediately with a moisturiser to seal in hydration. Use morning and evening.

We press two or three drops onto damp skin and seal it with moisturiser, morning and night, for that dewy finish.

Ingredients

Three molecular weights of hyaluronic acid, low weight to hydrate deep within and smooth fine lines, mid weight to improve moisture balance and resilience, and high weight to form a breathable film that locks in hydration. For the full ingredient list always refer to the product packaging.

About the Brand

COSRX is a Korean skincare brand built on a simple idea, that skincare should be about the ingredients that work and nothing that does not. Its cult formulas, from Advanced Snail 96 Mucin to the Master Patch, pair high performance actives with pared back, barrier friendly formulations, which is why they have become worldwide favourites. Straightforward, effective and gentle on skin. Shop the full COSRX range at SkinShop.ie, Ireland's home for expert skincare.

Glow Note

Three weights of hydration, one very happy, dewy complexion.

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