Ultra Pure High-Potency 5.0% Niacinamide Serum

All Skin Types, including Sensitive Skin

A concentrated 5% Niacinamide serum for oily skin made with only 10 ingredients that visibly reduces excess oil and shine.

kiehls-face-ultra-pure-high-potency-serum-niacinamide-30ml-3605972791238-front

Ultra Pure High-Potency 5.0% Niacinamide Serum

A concentrated 5% Niacinamide serum for oily skin made with only 10 ingredients that visibly reduces excess oil and shine.

Old price New price $35.00 ($1.17 / ml)

Select a Size

1.0 fl oz / 30 ml

Quantity

*You have chosen to pick up your item in store. If you would like to ship items to your home, you must create a separate order or modify the entire order.

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What It Is

Our shine reducing Niacinamide facial serum is minimally formulated with only ten ingredients to help reduce the appearance of excess oil and redness. Concentrated with 5% Niacinamide, our potent formula helps to visibly minimize shine and soothe skin.

Formulated to help visibly minimize shine and soothe skin
Minimally formulated for skin absorption and efficacy
Reduces the appearance of excess oil on skin
Visibly reduces redness
Suitable for all skin types, including sensitive
Free of fragrance and colorants

Key Ingredients

Niacinamide

Niacinamide, the form of Vitamin B3 used within our formulas, is known to help visibly brighten skin. When used in topical skincare formulas, Niacinamide can also help balance skin’s surface oil.

See full list

How to Use

Apply 2-3 drops to clean, dry skin in the morning and evening
Explore our other concentrated facial serums like our 1.5% Hyaluronic Acid serum and 9.8% Glycolic Acid serum.

Try out our Niacinamide serum skin hacks below:

Zone treat your face by applying our Niacinamide serum to areas prone to oiliness and breakouts. Follow with your favorite moisturizer where needed.
Layer with our Hyaluronic Acid serum to hydrate & rebalance skin’s moisture.
Layer with our Glycolic Acid serum to gently exfoliate & improve texture.

Kiehl’s Environmental Impact Scores

As part of our Kiehl’s Mission Renewal journey, we are providing the Environmental Impact Score to help you make informed decisions about the formulas you use. Kiehl’s is committed to continually improving the impact of our products throughout the product lifecycle, including the production and usage phase. This tool is designed to help assess the relative environmental and social impact of Kiehl’s Products compared to other L’Oréal Group products in the same category in 2020.

The calculation method was developed with the help of independent scientific experts and Bureau Veritas Certification, an independent auditor. The score takes into account 14 environmental impact factors all along the product's life cycle.

Learn more about the methodology, here.

Overall environmental impact

Compared to other similar L’Oréal Groupe Products sold worldwide in 2020

Carbon footprint

6.4¹g per average amount used

88g per 10mL

Water footprint

0.4² per average amount used

4.2 per 10mL

Every consumer product has some impact on the environment. A good score here does not mean a product has a positive impact or no impact on the environment. The letters and colors used in this tool are designed to help you make comparisons to other L’Oreal Groupe products in the same category around the world in 2020, so you can make more informed choices.

This product currently has a less favorable impact than we aim for, so we have set out an action plan to improve its environmental and social performance over the coming months. The letters and colors used in this tool are designed to help you make comparisons to other similar products in L'Oréal's global portfolio, so you can make more informed choices.

*Compared to other similar L’Oréal Groupe Products sold worldwide in 2020

This impact score is based on the simulated usage of 1 product and 4 refills.

Manufacturing Conditions

98%

Renewable energy:

100%

Packaging Facts

% of cardboard/paper certified
FSC^TM or PEFC:

100%

% of bottle made of recycled material³ including colorant:

20%

Refillable or reusable:

Social impact of the product

The ingredients and components of this product are sourced from suppliers committed to respect the Fundamental principles of the UN on labor standards.

1 or more suppliers committed to the social inclusion of people from vulnerable communities contributed to making this product.*

¹Grams of CO2 equivalent ("face care" category average = 9.6g)

²Water index including water quality + water scarcity (m3) - "face care" category average = 1.9

³Excuding pumps and/or caps

Learn More

Before and After

Our Niacinamide facial serum for oily skin visibly reduces surface oil and shine, and improves the look of smooth and even skin:

Instantly Reduces Excess Oil by 58%*
After 1 Week, 92% Agree Skin Feels Soothed**
Reduced Blemishes in 1 Week***

*Instrumental measurement in a 4-week clinical study.
**Reported by consumers in a 4-week study.
***Expert grading in a 4-week clinical study.

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Why We Love It

Minimally formulated with only 10 ingredients, our concentrated 5% Niacinamide serum has a fast-absorbing texture allows actives to be rapidly delivered into the skin to visibly reduce excess oil and provide targeted efficacy for your top skin concerns.

Find Your Formula

Ultra Pure High-Potency 5.0% Niacinamide Serum	Ultra Pure High-Potency 9.8% Glycolic Acid Serum	Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum
Ultra Pure High-Potency 5.0% Niacinamide Serum	Ultra Pure High-Potency 9.8% Glycolic Acid Serum	Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum
Skin Type All Types Dry Oily Combination Normal Sensitive	Skin Type All Types Dry Oily Combination Normal Sensitive	Skin Type All Types Dry Oily Combination Sensitive Normal
Skin Concern Uneven Skin Tone Blemishes Oily Skin / Acne	Skin Concern Enlarged Pores Uneven Skin Tone Tone & Texture Dull Skin	Skin Concern Dryness
Size One size available 1.0 fl oz / 30 ml	Size One size available 1.0 fl oz / 30 ml	Size One size available 1.0 fl oz / 30 ml
Price Old price New price $35.00	Price Old price New price $35.00	Price Old price New price $35.00

Expert Advice

“We wanted to deliver known skin actives, such as Niacinamide, Glycolic Acid and Hyaluronic Acid in their pure form in simple formulations without too many ingredients to deliver efficacy, layer well into a skin regimen and allow users to customize their skin care according to their needs. The simplified formulas ensure the ingredients absorb fully into the skin. Our Ultra Pure High-Potency Serum 5% Niacinamide helps reduce excessive sebum, visible redness, and the appearance of blemishes.”

Kiehl’s Global Scientific Director Dr. Nancy Ilaya PhD

Frequently Asked Questions

Answers to Your Frequently Asked Questions

What is Niacinamide?

What does a Niacinamide serum do for the skin?

Serums are a way to introduce ingredients to the skin in a lighter-weight, more concentrated format – in this instance: Niacinamide. Niacinamide is a water-soluble format of Vitamin B3 and has a multitude of benefits when applied topically. By placing this ingredient in a serum format, it allows the ingredient to be delivered directly to the skin at a concentration which will provide strong, beneficial effects.

What are the benefits of Niacinamide?

Niacinamide serums offer a wide array of benefits. Studies have shown that Niacinamide has the potential to act as an antioxidant, can improve skin’s barrier function, decrease skin hyperpigmentation, reduce fine lines and wrinkles, decrease redness/blotchiness, decrease skin yellowness (sallowness), and improve skin elasticity.

Can you use a Niacinamide serum every day?

Can a Niacinamide serum help acne?

Niacinamide has been found to be highly beneficial to those who are acne prone. It helps to regulate sebum production in the skin which, over time, can help reduce the number of breakouts. Additionally, Niacinamide is anti-inflammatory which can address active acne marks by calming and soothing irritation and redness. Lastly, because of its ability to regulate skin tone, it can address red and brown post-acne spots.

Purchase options

Purchase options

Ultra Pure High-Potency 5.0% Niacinamide Serum

A concentrated 5% Niacinamide serum for oily skin made with only 10 ingredients that visibly reduces excess oil and shine.

Overall environmental impact

Manufacturing Conditions

Packaging Facts

Social impact of the product

Before and After

Complete Your Routine

Ultra Facial Cleanser