Kiehl's Ultra Pure Hyaluronic Acid 1.5% Serum — 1 fl oz, Fragrance‑Free Hydrating Plumping Concentrate

Kiehl's Ultra Pure 1.5% Hyaluronic Acid Serum is a lightweight, fragrance‑free facial concentrate that delivers fast-absorbing hydration to replenish and plump dry skin.

This serum is formulated with a 1.5% dose of Hyaluronic Acid in a minimalist, seven-ingredient base designed for efficient skin absorption. It targets moisture loss, helps restore surface suppleness, and layers cleanly with other skincare steps. The fragrance-free formula is made for daily use morning and night and can also be mixed into liquid makeup for a dewy finish.

How quickly will I notice hydration and plumping effects?

Visible improvement in skin texture and a more hydrated look can appear within days for many users, while sustained use builds resilience and surface suppleness. Results depend on your baseline dryness, routine, and environmental factors.

• Concentrated 1.5% Hyaluronic Acid for immediate moisture binding.
• Fast-absorbing texture that reduces tackiness and layers under creams.
• Use twice daily to maintain continuous hydration levels.
• Add to foundation or highlighter for instant dewy finish.

Can this serum be used with other products in my routine?

Yes — the simple seven-ingredient formula was made to pair with most serums, moisturizers, and sunscreen. Apply 2–3 drops to clean, dry skin, then follow with targeted treatments or a cream; it also works well under eye products for extra moisture.

• Layer beneath a moisturizer to lock in hydration.
• Combine with heavier actives after this serum absorbs fully.
• Mix one drop into liquid makeup to thin coverage and add glow.

Is this suitable for sensitive or all skin types?

The fragrance-free, minimally formulated serum is appropriate for a wide range of skin types, including sensitive and dry skin. Because it uses a limited ingredient list, there are fewer potential irritants, but patch testing is advised if you have highly reactive skin.

• Fragrance-free to reduce irritation risk.
• Minimal seven-ingredient formula for cleaner layering.
• Recommended patch test for known sensitivities.

How should I apply this serum for best results?

Dispense 2–3 drops onto clean, dry skin and gently press until absorbed; use morning and evening. For additional benefits, layer under creams or eye products, or mix a drop into liquid makeup for improved finish and hydration.

• Use twice daily — AM and PM — after cleansing and before creams.
• Press into face and neck; avoid rubbing that can irritate sensitive areas.
• Add a drop to foundation/highlighter to boost hydration and luminosity.

Who is this for? This serum is aimed at anyone seeking concentrated, no‑frills hydration: people with dry or dehydrated skin, those who prefer fragrance‑free formulas, and skincare users who want an easy-to-layer product to boost moisture. If you want a lightweight hydrator that enhances plumpness and works seamlessly under other treatments or makeup, this Kiehl's 1.5% Hyaluronic Acid serum is a practical option.

Ingredients

Aqua/Water, Glycerin, Sodium Hyaluronate, Phenoxyethanol, Chlorphenesin, Tetrasodium Glutamate Diacetate, Citric Acid