Ultra Pure High-Potency Serum 1.5% Hyaluronic Acid 1 oz.

4.7 (502)
$34.00
$40.00
Sale ends 2/22/26
LOYALLISTS GET FREE SHIPPING! Sign Up
LOYALLISTS: No minimum EVERYONE ELSE: $50 or more
PLUS, FREE RETURNS! Info/Exclusions
Offers & Perks

Product Details

Web ID: 4633962

What It Is

Restore and retain moisture with Kiehl's concentrated 1.5% Hyaluronic Acid serum which visibly revitalizes, replenishes and intensively hydrates skin.

  • What It Does

    With 1.5% Hyaluronic Acid, this facial serum is formulated with just seven ingredients to help replenish dry skin and retain moisture for healthy-looking, hydrated skin. Free of fragrance and colorants, this concentrated serum is minimally formulated for skin absorption and hydration.

  • How To Use It

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

  • Clinical Results

    - After 1 week, 83% agree skin looks replenished*
    - Instantly boosts hydration by +89%**
    - Plumper skin in 1 week***

    *Reported by consumers in a 4-week study.
    **Based on an instrumental study.
    ***Expert grading in a 4-week clinical study.

  • Features

    • 1 oz.
    • Made in USA

  • Shipping & Returns

    • California and Minnesota customers call 1-800-777-0000 for Free Shipping information.
    • Please call customer service for returns.
    For complete details, see our Shipping and Returns policies.

Ratings & Reviews

Here's what customers think
  • The serum is described as lightweight, non-sticky, and easily absorbed, providing long-lasting hydration without feeling heavy or greasy.
  • The high concentration of hyaluronic acid is credited with visibly improving skin's appearance, making it look more radiant, supple, and youthful.
  • Customers with dry, dehydrated skin report it has been effective in reducing flakiness and restoring a healthy glow.
  • The serum also works well under makeup, helping to create a smooth, even canvas.
AI-generated summary from 502 customers reviews.
4.7/5

502 star ratings & reviews

Write a review
75.9% of reviews have 5 stars
381
18.5% of reviews have 4 stars
93
3.0% of reviews have 3 stars
15
0.6% of reviews have 2 stars
3
2.0% of reviews have 1 star
10

84 customer images

502 reviews
External reviewer
1 month ago

Didn’t work for me

Doesn’t work for me. Waste of money. Very disappointed

Customer review from kiehls.com

Response from kiehls.com

Consumer Care Center30 days ago

Hi there! Thank you for sharing your experience with us. We’re sorry to hear that the Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum didn’t deliver the results you were hoping for. We understand that skincare can work differently for everyone, and we truly appreciate your feedback. If you’d like help finding a routine better suited to your goals, we’d be happy to assist please feel free to call us at 1-800-543-4572 (Mon–Sun, 10am–7pm EST).

Nancy77
1 month ago
from New Orleans, LA

Sooo soothing!

Very soothing with Kiehl’s Ultra Facial Cream, especially after micro-needling!

Recommends this product

Customer review from kiehls.com

Potion Princess
2 months ago
from London

A NICE SURPRISE!

I was really keen to try this serum as I love the plumping effect that hyaluronic acid gives my skin. I don't always get on with Kiehl's products but this one is a winner! It absorbs well - with no stickiness - and is hydrating. A good value product.

Recommends this product

Customer review from spacenk.com

MichelleG
2 months ago
from Charlotte NC

Love this serum!

I am 54 yo and was finding my makeup was looking cakey or thicker when I was wearing it. This product has helped moisturize my skin, and makeup looks so much better!

Recommends this product

Customer review from kiehls.com

Maryann44
2 months ago

Love it!

So helpful for moisture, while also being gentle. I’ve tried other brands and this is my favorite.

Recommends this product

Customer review from kiehls.com

MToddNYC
2 months ago
from New York City

Magical Serum

This is a magical serum. I use it twice weekly. The serum is light, absorbing quickly, and seems to radiate a natural glow from my complexion. I keep this gem stocked at all times.

Recommends this product

Customer review from kiehls.com

TCAN
4 months ago
from Chester

It's great and affordable

I’ve got this sample with my SpaceNK purchase and it's quite hydrating. With the amount I received, iv I only been able to have two goes, so I don't know about the long term effectd, but I felt instantly hydrated when applied. It also feels so lightweight like it disappeared straight away I rubbed it in.

Recommends this product

Customer review from spacenk.com

HSB
4 months ago
from London

Absolutely love this

This is great for sensitive and dehydrated skin and for winter months. A little goes a long while, 2-3 drops like teeny tiny drops only need for whole face. Would definitely recommend this product !!!!!! I changed from the inkey list brand to this one and I prefer this one

Recommends this product

Customer review from spacenk.com