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Product Comparison

Here's our complete breakdown comparing the ingredients, attributes, and more of La Roche-Posay 10% Pure Vitamin C Serum versus Curology Custom RX Azelaic acid 8% Tranexamic acid 5% Niacinamide 4% .

Last updated on March 21, 2024. Published on November 02, 2022

Overview

What they are

These products are both reef safe . They have a total of 3 ingredients in common

Cool Features

They both contain Vitamin E

Suited For

They're both likely to be good for fighting acne, brightening skin, oily skin, reducing pores, scar healing and dark spots

Free From

They both do not contain any common allergens, oils, parabens or sulfates

What's Inside

They both contain fragrances

We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that need an update? Let us know.

Serum French Brand France
Prescription American Brand United States

Serum

Serums are highly concentrated with ingredients to provide skin with benefits. They should be used after cleansing and before moisturizing.

Prescription

Prescription skincare treatments. The ingredients in these product are prescription strength and considered medication. In many countries, these must be prescribed by a certified professional.

Price

Shop

Buy 10% Pure Vitamin C Serum

Starts at $44.99
Shop

Buy Custom RX Azelaic acid 8% Tranexamic acid 5% Niacinamide 4%

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
alcohol-free
silicon-free
fragrance-free
sulfate-free
paraben-free
oil-free
fungal-acne safe
reef-safe
eu-allergen-free
vegan
cruelty-free

At a glance

Click on any of the items below to learn more

Notable Ingredients

BHA
Vitamin C
Vitamin E
Hyaluronic Acid (2)
Peptides

Benefits

Hydrating (2)
Good For Oily Skin
Redness Reducing
Skin Texture
Reduces Large Pores
Anti-Aging (3)
Dark Spots
Scar Healing (4)
Acne Fighting
Brightening (4)

Concerns

Drying (2)
May Worsen Oily Skin
Irritating (3)
Rosacea (3)
Eczema (4)

Notable Ingredients

Vitamin E
Niacinamide

Benefits

Good For Oily Skin
Redness Reducing (3)
Reduces Irritation
Reduces Large Pores (2)
Dark Spots (3)
Scar Healing
Acne Fighting (2)
Brightening (2)

Concerns

May Worsen Oily Skin
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Ingredients Side-by-side

Ingredients that are highlighted in purple are present in both products.

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Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

1
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 helps 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

La Roche-Posay 10% Pure Vitamin C Serum contains this as ingredient number 1.

Curology Custom RX Azelaic acid 8% Tranexamic acid 5% Niacinamide 4% contains this as ingredient number 7.

2
What it does:
Community Rating: Disliked

Polyacrylamide is a synthetic polymer. It is used to stabilize products and bind ingredients. When hydrated, Polyacrylamide forms a soft gel.

Polyacrylamide is low-toxicity. If source properly, it is deemed safe to use in cosmetics.

It should be noted the precursor to Polyacrylamide is acrylamide. Acrylamide is a carcinogen. Most reputable sources of Polyacrylamide will screen for residual acrylamide to make sure the count is in a safe range. Acrylamide is not able to be absorbed through the skin.

We recommend speaking with a professional if you have concerns.

Learn more about Polyacrylamide

La Roche-Posay 10% Pure Vitamin C Serum contains this as ingredient number 18.

Curology Custom RX Azelaic acid 8% Tranexamic acid 5% Niacinamide 4% contains this as ingredient number 10.

3
What it does: Emulsifying
Community Rating: Very Disliked

Laureth-7 is created by the ethoxylation of lauryl alcohol using ethylene oxide. Lauryl alcohol is a fatty alcohol with hydrating properties.

Laureth-7 is an emulsifier and cleansing ingredient. As an emulsifier, it is used to prevent ingredients from separating. It also helps cleanse the skin by gathering dirt, oil, and pollutants to be rinsed away.

La Roche-Posay 10% Pure Vitamin C Serum contains this as ingredient number 23.

Curology Custom RX Azelaic acid 8% Tranexamic acid 5% Niacinamide 4% contains this as ingredient number 8.

Here's what our community thinks of the ingredients in these two products.

50% are loved or liked
0% have mixed ratings
46% are disliked or very disliked
4% have no rating yet
50% are loved or liked
8% have mixed ratings
33% are disliked or very disliked
8% have no rating yet

Usage

Here's some more info on how this product is used by our community.

When to use

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Reviews

Here's what our community thinks

La Roche-Posay 10% Pure Vitamin C Serum 24 ingredients

4.0 /5
from 6 ratings
Lapaki's avatar

Lapaki

1 year ago · Dry Skin
Review

This was my first vitamin C serum
I started using this because I was curious about Vitamin C and wanted to experience its benefits. This is a...

This was my first vitamin C serum
I started using this because I was curious about Vitamin C and wanted to experience its benefits. This is a really good and gentle Vitamin C serum for sensitive skin. Mine got used to it and now tolerates stronger products.

Cashmaire_08's avatar

Cashmaire_08

3 years ago · Combination Skin
Review

So far so good.
I have sensitive skin and this doesn't sting at all.

Curology Custom RX Azelaic acid 8% Tranexamic acid 5% Niacinamide 4% 12 ingredients

Custom RX Azelaic acid 8% Tranexamic acid 5% Niacinamide 4% hasn't been rated yet.
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Alternatives

Our Dupe Finder has found 41 potential alternatives that have similar ingredients to La Roche-Posay 10% Pure Vitamin C Serum.

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We haven't detected any alternatives for Curology Custom RX Azelaic acid 8% Tranexamic acid 5% Niacinamide 4%.

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