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Hyaluronic Acid

4 Products

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Vital Skin-Strengthening Hyaluronic Acid Super Serum

Vital Skin-Strengthening Hyaluronic Acid Super Serum

A skin-strengthening serum that helps skin feel protected against daily stressors and premature signs of ageing.

Old price New price €84.00

A 75ml bottle of Kiehl's Powerful-Strength Line-Reducing Concentrate against a white background.

A close-up of Powerful-Strength Line-Reducing Concentrate texture swipe. Text highlights its ability to reduce fine lines, improve texture, and suitability for all skin types.

Powerful-Strength Line-Reducing Concentrate

A potent anti-wrinkle serum formulated with 12.5% Vitamin C and Hyaluronic Acid.

Old price New price €76.00

A 30ml bottle of Kiehl's Ultra Pure 1.5% Hyaluronic Acid Serum against a white background.

A close-up of the Ultra Pure 1.5% Hyaluronic Acid Serum texture showing clear liquid droplets. Text highlights hydrating benefits and suitability for all skin types.

A graphic highlighting the key ingredient of Ultra Pure 1.5% Hyaluronic Acid Serum: Hyaluronic Acid.

Ultra Pure High-Potency Serum 1.5% Hyaluronic Acid

A concentrated 1.5% Hyaluronic Acid facial serum formulated with just seven ingredients to help your skin bounce back with replenishing moisture and intensive hydration.

One size available

30 ml

Old price New price €35.00

Kiehl's Hydro Plumping Serum Concentrate bottle

Model with Kiehl's Hydro Plumping Serum Concentrate drops on their face

Kiehl's Hydro Plumping Serum Concentrate penetrates up to 10 layers deep to visibly plump skin

Hydro-Plumping Re-Texturizing Serum Concentrate

An efficacious hydrating serum that helps plump and smooth the appearance of skin.

Old price New price €62.00

Frequently Asked Questions

Which Kiehl's hyaluronic acid serum is right for me?

It depends on what you're looking for beyond hydration. If you want a straightforward, high-concentration hyaluronic acid formula, we recommend the Ultra Pure High-Potency Serum 1.5% Hyaluronic Acid for targeted moisture. If you'd also like to address fine lines and uneven skin tone, the Powerful-Strength Line-Reducing Concentrate pairs hyaluronic acid with 12.5% Vitamin C for a multi-benefit approach.

Should I apply hyaluronic acid to wet or dry skin?

For best results, apply hyaluronic acid to damp skin straight after cleansing. Because hyaluronic acid works by drawing in moisture, applying it to slightly wet skin gives it water to hold onto, helping your skin feel plumper and more hydrated. Always follow with a moisturiser to seal that hydration in.

Can I use the Kiehl's Vital Skin-Strengthening Hyaluronic Acid Super Serum every day?

Yes, hyaluronic acid is gentle enough for daily use, morning and evening. The Skin-Strengthening Hyaluronic Acid Super Serum is designed to slot into your routine twice a day, helping skin feel protected against daily stressors while keeping it hydrated and supported over time.

What Does Hyaluronic Acid Actually Do for Your Skin?

Hyaluronic acid works as a powerful humectant, drawing moisture from the environment and deeper skin layers to hydrate your skin's surface. This ingredient can hold up to 1,000 times its weight in water, which helps plump the skin and reduce the appearance of fine lines. We love it because it delivers visible hydration benefits without feeling heavy or greasy on the skin.

Can I Use Hyaluronic Acid With Retinol?

Yes, hyaluronic acid and retinol make an excellent pairing in your skincare routine. Because retinol can sometimes cause dryness or sensitivity, hyaluronic acid helps counteract these effects by providing essential hydration and supporting your skin barrier. We recommend applying hyaluronic acid first, then following with your retinol product.

What Skin Type is Hyaluronic Acid Best for?

Hyaluronic acid is beneficial for all skin types, including dry, oily, combination, and sensitive skin. It provides lightweight hydration without adding oil or clogging pores, making it particularly versatile. Whether your skin tends to feel tight and parched or you're managing excess shine, hyaluronic acid can help balance your moisture levels.

How Long Does It Take to See Results From Hyaluronic Acid?

You may notice immediate hydration and a plumper appearance after your very first application of hyaluronic acid. More significant improvements in skin texture and the appearance of fine lines typically become visible after several weeks of consistent use. For best results, we recommend incorporating it into both your morning and evening routines.

What Should I Avoid Mixing With Hyaluronic Acid?

Hyaluronic acid is compatible with most skincare ingredients, so you have plenty of flexibility when building your routine. However, you may want to avoid layering it directly with very high-concentration exfoliating acids (like strong glycolic or salicylic formulas) to prevent potential irritation. If you use potent exfoliants, we suggest alternating them with your hyaluronic acid products rather than applying both at once.

Does Hyaluronic Acid Help With Acne-prone Skin?

While hyaluronic acid does not directly treat acne, it can be a valuable addition to an acne-prone skincare routine. It provides lightweight, non-comedogenic hydration that helps maintain a healthy skin barrier without clogging pores. Keeping skin properly hydrated may also help reduce the overproduction of oil that can contribute to breakouts.

What is the Difference Between a Hyaluronic Acid Serum and a Moisturiser?

A hyaluronic acid serum typically contains a higher concentration of the active ingredient and is formulated to penetrate more deeply into the skin. A moisturiser with hyaluronic acid provides hydration plus occlusive ingredients that seal moisture in and protect the skin barrier. For maximum benefits, we recommend using both: apply your serum to damp skin first, then follow with a moisturiser to lock everything in.