Choose 2 free samples at checkout


Ultra Pure High-Potency Serum 1.5% Hyaluronic Acid
Join the waitlist

Perfect pairing

Recommended Item

Recommended Item


Ultra Facial Cream




Ultra Pure High-Potency Serum 1.5% Hyaluronic Acid


Select Size
  • In Stock

Join the waitlist
Worth 29 NDULGE points.

Sign up to our complimentary loyalty programme, NDULGE and make shopping with us even more rewarding.

  • Earn 1 point for every you spend
  • For every 100 points earned, receive a reward to spend on your next purchase (in-store and online)
  • As part of our community you’ll enjoy exclusive privileges such as a birthday gift every year and event invitations. Plus, enjoy unlimited double points in your first month.

Enjoy 15% off
On your first order with code FIRST15

Complimentary Samples
Choose 2 free samples at checkout

Free UK Standard Delivery
On all orders over £25

100% Satisfaction Guaranteed
Not happy? Send it back for free



Boost hydration with Kiehl’s Ultra Pure High-Potency Serum 1.5% Hyaluronic Acid (Moisture Plumping), a concentrated mist with a simple but effective formula designed to help replenish dry skin.

Formulated with just seven ingredients, this serum is powered by 1.5% hyaluronic acid. Helping the skin to better retain moisture, it works to boost resiliency and leaves the skin with a bouncy, supple appearance.

Providing colour and fragrance-free skincare, the minimal formulation helps to maximise skin absorption and hydration. Apply this refreshing facial serum over the complexion as part of a morning and evening routine to help bring the bounce back to the skin for a complexion that feels healthy, plump and hydrated.

Key Benefits

  • Provides intensive hydration
  • Powered by 1.5% hyaluronic acid
  • Simple but effective formula of just seven ingredients
  • Free from colourants and fragrance
  • Helps the skin retain moisture
  • Easily absorbed into the skin
  • Plumps up the skin for a more supple look

SKU# UK200038486

In the morning and evening, apply 2–3 drops to clean, dry skin

Limitless Beauty Delivery Pass £10 Unlimited Next day delivery for a year. Order before 8pm (Mon-Fri) and receive your order the next working day. (T&Cs apply)

Free when you spend £25. Delivered in 2-4 working days

Free when you spend £75. Order before 4pm. Delivered in 2 working days

Order before 8pm.

Collect your order from one of our stores within 3-5 working days.

We ship worldwide! Find out more here for shipping or here for returns.

Buy with confidence thanks to Space NK’s 100% Satisfaction Guarantee
Unopened product can be returned for a full refund or exchange within 28 days of purchase with proof of purchase.
Opened or used products that you are not completely satisfied with can be returned for an exchange within 28 days of purchase with proof of purchase.

Shop the Kiehl's skin and body care range, rooted in science and nature, from their Ultra Facial cream to their Creme de Corps.


7 Reviews


Summary of Customer Ratings & Reviews


Location: London

Reviews: 26

Age: 30-45

Skin Type:: Combination

Gender: Female

Recommends this product: Yes

September 11 2023

Pleasantly Surprised!

I've had a love/hate relationship with Kiehls, but I was really surprised by how effective this serum was! Best applied to a slightly damp face, it really did leave my skin looking plump, hydrated, and had zero of that sticky-residue feeling that you sometimes get with hyaluronic acid serums. I prefer using it at nighttime but I think you definitely could get away with using it underneath your makeup during the day.

Best Use: Hydrating, Reduce Dullness


Reviews: 37

September 05 2023

amazing serum

First of all, I was really blown away by the price of this serum. Normally every Kiehl's product that I buy is £40 so to have this be under £30 was such a nice surprise. This feels lovely on my dry skin and has been a nice addition to my skincare routine so far. If you're looking to add a hyaluronic acid into your routine, I would definitely recommend giving this one a try.


Location: London

Reviews: 1

Age: 45+

Skin Type:: Normal / Balanced

Gender: Female

Recommends this product: Yes

August 07 2023

Nice stuff

I got a sample of this with my last order as I use KIEHL’S avocado eye cream and a day cream, so wanted to try some of their other products. It is a generous sample for a sachet and I was able to use it over 5 nights. It is a light gel like texture that seems to have no fragrance, which is a good thing for me, it melted into my skin very nicely and didn’t leave a sticky residue, like some serums can. My skin felt nice and looked fresh so when I need to buy hyaluronic acid, I will definitely give this a go.

Best Use: Hydrating, Uneven Skin Texture, Firming, Anti-Aging


Location: Leeds

Reviews: 1

Gender: Female

Recommends this product: Yes

August 02 2023


I was using a high end hyaluronic serum for years but due to recent price increases (almost three times the price of Kiehls one now) decided to look for alternatives. Tried a few but they did not feel or seem effective until I discovered this serum. Few other comments on the slightly thick and sticky texture - in my opinion that’s a sign of highly concentrated HA. It was the same with my high end serum but the ones that didn’t feel effective were of very thin consistency and delivered little result. I rub it on my palms and firmly pat into my face and neck areas. I’ll be sticking with Kiehls moving forward.


Reviews: 20

May 16 2023

Magic in the bottle

The texture is a bit sticky, but it is normal because it is hyaluronic acid, and it is not sticky after drying. There is no smell and the ingredients are very hydrating and have the effect of improving the top layer of the skin. I usually use it before any face cream, a few drops, once in the morning and once in the evening. It may be easy to rub on skin with makeup during the day, I would recommend using it more at night.

1 - 5 of 7 Reviews
No reviews