Versus

Cos De BAHA Azelaic Acid 10% Serum with Niacinamide Versus Paula's Choice 10% Azelaic Acid Booster

Serum
Facial Treatment
Korean Brand South Korea
American Brand United States

Updated on May 27, 2025

Overview

What they are

These products are both cruelty-free and reef safe . They have a total of 2 ingredients in common

Suited For

They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture

Free From

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

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

Ingredient Info

Click any item below to learn more and see relevant ingredients

What's inside

What's inside

At a glance

Click on any of the items below to learn more

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products

Ingredients Explained

These ingredients are found in both products.

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

Buffering, Masking

Azelaic acid is a multitasker ingredient that helps treat acne, pigmentation, and irritation. It is a great option for sensitive skin.

What makes azelaic special?

The best thing about azelaic acid is it's gentleness. It's generally well-tolerated and safe to use alongside other actives like niacinamide or salicylic acid.

Unlike AHAs, azelaic acid will not make you photosensitive/sun sensitive.

You can find this ingredient naturally occurring in grains like wheat, rye, and barley. In cosmetics, azelaic acid is typically lab-made, which is more stable and effective.

Learn more about Azelaic Acid
Solvent

Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin. 

It’s often used to:

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

When to use

756 Routines
40% use in am
60% use in pm
83% use every day
When to use See routines that use it ->
840 Routines
44% use in am
56% use in pm
81% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

4.07
Overall rating
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1
What people say
Great Value 75% No Scent 50% Works Well 50%
3.15
Overall rating
5
4
3
2
1
What people say
Expensive 38% Broke Me Out 38% Doesn't Work 38%