Pure Hyaluronic Acid 3% SerumCOSRX Pure Hyaluronic Acid 3% Serum 20 ml (0.67 fl oz)

A hydration step that fits morning and evening

COSRX pairs its hyaluronic acid with sodium hyaluronate in a serum designed to draw in and hold moisture. Used once or twice a day on the face and neck, it aims to leave dry skin looking plumper and feeling more comfortable, based on consumers' own assessments.

Ceramides and natural moisturising factors

Beyond the hyaluronic acid, the complex includes ceramides and NMF (natural moisturising factors), which the brand includes to support the skin barrier. COSRX states the serum is hypoallergenic, dermatologist tested, not tested on animals, and free from parabens, sulfates and phthalates.

Bottle size

One 20 ml (0.67 fl oz) bottle, made in Korea. Only a few drops are needed each time.

How to use

Apply 2-3 drops to the face and neck once or twice daily. It can be used under the eye area, but avoid direct contact with the eyes. Patch test on the body before using it on the face.

Before you choose

This is a lightweight hydrating serum, so most routines will still need a moisturiser and, in the daytime, sunscreen. A patch test on the body is recommended before first use on the face. For external use only. Avoid contact with eyes, stop using it if irritation or redness occurs, and keep out of reach of children. Korean-market product: packaging may show Korean text.

Standard UK delivery: free on all orders. Estimated 2–3 working days after dispatch.

Express UK delivery: estimated 1–2 working days after dispatch. Free on orders over £75.

Please allow up to 2 working days for order processing; orders are often dispatched the next working day. Delivery times are estimates, not guarantees.

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