COSRX Pure Sodium Hyaluronic Acid 3% Serum – Deep Hydration & Barrier Support, 0.67 fl oz (20 ml)

Meet the COSRX Pure Sodium Hyaluronic Acid 3% Serum, a lightweight hydrating concentrate designed to help your skin hold onto moisture through a trio of active ingredients: hyaluronic acid, ceramides, and natural moisturizing factors. The fragrance-free formula keeps the focus on comfort and hydration, making it a friendly option for daily skincare routines. This serum aligns with COSRX’s skin-first standards, prioritizing gentle, skin-friendly ingredients you can integrate into your regimen without added fragrance.

What powers the hydration

• 3% pure hyaluronic acid helps attract and hold moisture near the skin’s surface for a refreshed feel.
• Ceramides and natural moisturizing factors support the skin barrier to maintain moisture balance.

Usage guidance

• Apply 2–3 drops to the face and neck once or twice daily for a lightweight hydration boost.
• Can be used under the eye area; avoid direct contact with the eyes.
• Perform a patch test on the body before applying to the face to check sensitivity.

What you might notice

• Dryness is softened and surface texture appears smoother after application.
• The texture is light and fast-absorbing, making it easy to layer with other products.
• Fragrance-free formulation reduces the chance of irritation for sensitive skin.
• Dermatologist-tested and hypoallergenic, with ingredients that are free from parabens, sulfates, and phthalates.

COSRX standards and ethics

COSRX emphasizes skin-friendly formulations and ethical practices, including not testing on animals and keeping formulas free from artificial fragrances. This serum is designed to fit into a routine focused on gentle daily hydration while respecting sensitive or reactive skin needs.