Disclosure: This page may contain affiliate links. Read our full disclosure policy.

paulas choice Niacinamide 20 Treatment.
itk Hyaluronic Acid Serum.

Product category and function

Clinical Niacinamide 20% Treatment
Hyaluronic Acid Serum (Itk)
Serums/Treatments Serums/Treatments
Concentrated formulas for hydrating and addressing skin issues.
Concentrated formulas for hydrating and addressing skin issues.
---- ----

Ingredient highlights

Clinical Niacinamide 20% Treatment
Hyaluronic Acid Serum (Itk)
Ingredient info Ingredient info

Alcohol-free

Paraben-free

SLS-free

Mica-free

Fragrance-free

Alcohol-free

Paraben-free

SLS-free

Mica-free

Fragrance-free

Full ingredient list

Clinical Niacinamide 20% Treatment
Hyaluronic Acid Serum (Itk)
No. of common ingredients = 0
Total Number of ingredients = 25 Total Number of ingredients = 16
Water, niacinamide, pentylene glycol, butylene glycol, glycerin, acetyl glucosamine, ascorbyl glucoside, glycyrrhiza glabra (licorice) root extract, spiraea ulmaria extract, portulaca oleracea extract, camellia japonica flower extract, epigallocatechin gallate, boerhavia diffusa root extract, camellia sinensis leaf extract, allantoin, lecithin, pullulan, panthenol, silica, xanthan gum, sclerotium gum, propanediol, sodium phytate, phenoxyethanol, ethylhexylglycerin Water (aqua/eau), butylene glycol, peg-40 castor oil, phenoxyethanol, 1,2-hexanediol, sodium hyaluronate, panthenol, niacinamide, chlorphenesin, ethylhexylglycerin, squalane, pentylene glycol, sodium acetylated hyaluronate, hydrogenated olive oil unsaponifiables, sodium hyaluronate crosspolymer, hydrolyzed sodium hyaluronate.

Notable ingredients

Clinical Niacinamide 20% Treatment
Hyaluronic Acid Serum (Itk)

Ingredients with their functions

Clinical Niacinamide 20% Treatment
Hyaluronic Acid Serum (Itk)

1

Water

Also-called: Aqua, Aqua/Water, Water/Aqua/Eau, Aqua/Water/Eau | Function: Skin conditioning, Solvent

Water serves as a fundamental component in skincare products, often listed as the first ingredient, which means it's the most abundant. It acts as a solvent, helping to dissolve other ingredients and facilitate the application and absorption of products.

2

Niacinamide

Also-called: Nicotinamide, Vitamin B3 | Function: Anti-acne, Soothing, Skin brightening, Cell-signaling ingredient

Niacinamide, also known as vitamin B3, is a potent skincare ingredient renowned for its wide-ranging benefits. 

It helps to strengthen the skin's barrier function, improve skin texture, and reduce the appearance of fine lines and wrinkles. It's also effective in managing acne and reducing redness and inflammation. 

Furthermore, it inhibits melanin production, thereby assisting in fading hyperpigmentation and evening out skin tone. Safe for almost all skin types, niacinamide is a versatile ingredient found in various skincare products.

3

Pentylene glycol

Function: Skin conditioning, Solvent

We don’t have a detailed description of this ingredient yet.

1

Water (aqua/eau)

Also-called: Aqua, Aqua/Water, Water/Aqua/Eau, Aqua/Water/Eau | Function: Skin conditioning, Solvent

Water serves as a fundamental component in skincare products, often listed as the first ingredient, which means it's the most abundant. It acts as a solvent, helping to dissolve other ingredients and facilitate the application and absorption of products.

2

Butylene glycol

Function: Viscosity controlling, Skin conditioning, Humectant/Moisturizer, Solvent

We don’t have a detailed description of this ingredient yet.

3

Peg-40 castor oil

Function: Surfactant/Cleansing

We don’t have a detailed description of this ingredient yet.

Price range

Clinical Niacinamide 20% Treatment
Hyaluronic Acid Serum (Itk)
$50 to $100
less than $20

Where to buy

Clinical Niacinamide 20% Treatment
Hyaluronic Acid Serum (Itk)

Near dupes

Clinical Niacinamide 20% Treatment
Hyaluronic Acid Serum (Itk)

Beautymasterlist footer icon

© 2026 Beauty Master List, All Rights Reserved.