Versus

Paula's Choice 10% Azelaic Acid Booster Versus COSRX BHA Blackhead Power Liquid

Facial Treatment
Exfoliator
American Brand United States
Korean Brand South Korea

Updated on July 18, 2023

Overview

What they are

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

Cool Features

They both contain BHA

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 (and what isn't)

What's inside (and what isn't)

At a glance

Click on any of the items below to learn more

Key Ingredients

Benefits

Concerns

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.

Emulsifying, Emulsion Stabilising, Gel Forming

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.

Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.

Learn more about Xanthan Gum
Humectant, Masking, Skin Conditioning

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.

Learn more about Butylene Glycol

When to use

762 Routines
44% use in am
56% use in pm
80% use every day
When to use See routines that use it ->
2,001 Routines
25% use in am
75% use in pm
57% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

Paula's Choice 10% Azelaic Acid Booster 21 ingredients

3.2 /5
from 13 ratings
Expensive (3) Broke Me Out (3) Doesn't Work (3)
thesunrising's avatar

Mia

1 year ago
Review

Did nothing for my fungal acne. Actually did nothing at all.
(Compared to my cheap no-name Russian brand Azelaic acid cream which worked wonders).

#doesn't work
BubbIes's avatar

BubbIes

1 year ago
Review

Paula's Choice at it again with cetearyl alcohol high up on the ingredient list. I'm disappointed by their ingredients fairly consistently now.

#broke me out
#irritating

COSRX BHA Blackhead Power Liquid 10 ingredients

3.8 /5
from 38 ratings
Absorbs Well (13) Light (12) Works Well (11)
sword's avatar

sword

1 year ago
Review

Gently Exfoliates
I decided to try a leave-on exfoliator rather than an exfoliating cleanser because I noticed I kept getting irritation from exfoliating cleansers. This Cosrx one is really gentle and pleasant. It takes a few minutes for it to absorb into my skin, but afterwards I get very little irritation and my skin texture and pore appearance have definitely improved.

#great value
#light
#no scent
#works well
v22's avatar

v22

7 months ago
Review

My favourite COSRX product. Pores appear smaller after a few hours. Was not expecting sebaceous filaments to disappear. I usually use one pump of liquid and put it directly on my T-zone and leave it to do its magic for about a few hours before applying moisturiser. (Putting moisturiser right after reduces its effectiveness from my personal experience.)

#great value
#light
#absorbs well
#no scent