Products > Kiehl's > Ultra Pure High-Potency 5.0% Niacinamide Serum

Kiehl's Ultra Pure High-Potency 5.0% Niacinamide Serum

Use this product

Welcome to our explanation of everything that you need to know about Kiehl's Ultra Pure High-Potency 5.0% Niacinamide Serum. Let’s get started!

serum that contains hyaluronic acid and niacinamide.
it doesn't contain any harsh alcohols, common allergens, fragrances, oils, parabens, silicones or sulfates.
it is fungal acne (malassezia) safe and reef safe.

This product was submitted by maximkott on March 11, 2023

Serum American Brand United States

8 Routines 288 Dupes

At a glance

Notable Ingredients

Niacinamide

Hyaluronic Acid

Benefits

Good For Oily Skin

Redness Reducing

Acne Fighting

Brightening

Ingredient Info

Click any item below to learn more and view relevant ingredients.

alcohol-free

silicon-free

fragrance-free

sulfate-free

paraben-free

oil-free

fungal-acne safe

reef-safe

eu-allergen-free

vegan

cruelty-free

Kiehl's Ultra Pure High-Potency 5.0% Niacinamide Serum Ingredient List (10)

Water • Niacinamide • Glycerin • Propanediol • Methyl Gluceth-20 • Hydroxyacetophenone • Sodium Hyaluronate • Caprylyl Glycol • Carbomer • Sodium Hydroxide

Ingredients Explained

This product contains 10 ingredients. Click on any ingredient to learn more about it

Water

What it does: Skin Conditioning, Solvent

Community Rating: Loved

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it's there to help dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!

Learn more about Water

Niacinamide

What it does: Smoothing

Community Rating: Liked

Niacinamide has emerged as an all-star ingredient due to its many benefits.

It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.

Other benefits include smoothing wrinkles and minimizing redness.

Niacinamide can also help build keratin, a protein that keeps skin firm.

When incorporating Niacinamide into your routine, look out for concentration amounts. Typically, 5% Niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.

Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.

Learn more about Niacinamide

Glycerin

What it does: Humectant, Skin Conditioning, Skin Protecting, Solvent

Community Rating: Loved

Glycerin is already naturally found in your skin and helps moisturize and protect your skin. A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.

Glycerin is a humectant, helping the skin stay hyrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.

Having moisturized skin helps improve the skin barrier. Your skin barrier helps protect against irritants and bacteria.

Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.

In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.

Glycerin is organic, colorless, odorless, and non-toxic.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Learn more about Glycerin

Propanediol

What it does: Solvent

Community Rating: Liked

Propanediol helps absorb ingredients into your skin, boosting their benefits. It can act as an emollient, making your skin softer. Propanediol can help products last longer by boosting the properties of preservatives within the formulation.

Propanediol is not likely to cause sensitivity and considered safe to use.

It is derived from corn or petroleum with a clear color and no scent.

Learn more about Propanediol

Methyl Gluceth-20

What it does: Humectant, Moisturising

Methyl Gluceth-20 is a humectant. Humectants help draw moisture from the air to your skin.

It is created by combining polyethylene glycol with glucose.

Learn more about Methyl Gluceth-20

Hydroxyacetophenone

What it does: Antioxidant

Community Rating: Liked

Hydroxyacetophenone is antioxidant and helps with skin conditioning.

Antioxidants help fight off free-radical molecules. These unstable molecules may damage your skin cells. By helping stabilize free-radicals, antioxidants may help in anti-aging.

Hydroxyacetophenone boosts the efficiency of other preservatives.

Learn more about Hydroxyacetophenone

Sodium Hyaluronate

What it does: Humectant, Skin Conditioning

Community Rating: Liked

Sodium Hyaluronate is hyaluronic acid's salt form.

Sodium Hyaluronate is great at holding water and acts as a humectant. It plays a role in hydrating and soothing skin.

It is naturally occurring in our bodies and is mostly found in eye fluid and joints; it is commonly derived from sodium salt of hyaluronic acid.

These are some other common types of Hyaluronic Acid:

Learn more about Sodium Hyaluronate

Caprylyl Glycol

What it does: Emollient, Skin Conditioning

Community Rating: Liked

Caprylyl Glycol is a humectant, meaning it retains and preserves moisture. It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.

Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.

This ingredient is also used as a preservative to extend the life of products.

Learn more about Caprylyl Glycol

Carbomer

What it does: Emulsion Stabilising, Gel Forming

Community Rating: Disliked

Carbomer is a polymer of acrylic acid. Its main role is to create gel consistency within products.

Carbomer is commonly found in many types of cosmetics products. It is found to be safe in concentrations up to 15%. However, a high amount of carbomer can cause pilling or balling up of products. Most products contain 1% of less of carbomer.

Learn more about Carbomer

Sodium Hydroxide

What it does:

Community Rating: Mixed

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.

Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.

"Alkaline" refers to a high pH level. A low pH level would be considered acidic.

Learn more about Sodium Hydroxide

Embed Ingredients