• 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

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.

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.

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.

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.