Versus

Cos De BAHA Azelaic Acid 5% Facial Serum Versus Bayer Skinoren 15% Gel Azelaic Acid

Serum
Prescription
Korean Brand South Korea
German Brand Germany

Updated on April 01, 2025

Overview

What they are

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

Suited For

They're both likely to be good for fighting acne, dry skin, sensitive 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, silicones 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

About this product

About this product

At a glance

Click on any of the items below to learn more

Benefits

Concerns

Ingredients Explained

These ingredients are found in both products.

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

Humectant, Skin Conditioning, Solvent

Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.

Another role of this ingredient is preventing a product from melting or freezing. Propylene glycol also adds antimicrobrial properties to a product, elongating product lifespan.

This ingredient is considered an organic alcohol and commonly added into both cosmetics and foods.

Those with sensitive skin or conditions may develop a rash when using this ingredient.

Learn more about Propylene Glycol
Buffering, Masking

Azelaic acid is a naturally occurring acid derived from grains. This ingredient is effective in treating acne, rosacea, and other skin conditions.

It has been shown to reduce the growth of acne-causing bacteria and helps reduce inflammation. On top of that, it helps reduce the production of sebum and unclog pores.

Azelaic Acid also has antioxidant properties. Antioxidants protect our skin cells from free-radical damage.

One of the main benefits of azelaic acid is that it is gentle and well-tolerated by most people.

Fun fact: The lab-created form of azelaic acid is typically used within cosmetic products for its shelf-stability.

Learn more about Azelaic Acid

When to use

85 Routines
41% use in am
59% use in pm
84% use every day
When to use See routines that use it ->
150 Routines
46% use in am
54% use in pm
81% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

Cos De BAHA Azelaic Acid 5% Facial Serum 14 ingredients

4.7 /5
from 3 ratings
No Scent (3) Works Well (3) Hydrating (2)
Cloudynights's avatar

cloudynights

4 months ago
Review

Got this for my spouse to help with eczema, but I ended up using it too to treat a fungal acne break out. I saw improvements very quickly. Very pleased. Not much of a smell, doesn't irritate my skin. Would recommend. They also have higher percents as well.

#light
#no scent
#works well
Auria's avatar

Auria

3 months ago
Review

First time using Azelaic acid and it has helped with redness reduction and my cystic acne flareups. I started using this 2-3x times a week to avoid using too many actives and I feel that 5% is a bit slow to see faster results. I think my skin can tolerate a higher concentration so I will be testing out the 10% version at some other time. The texture of the serum is on the thicker side and does Show more

#hydrating
#sticky
#no scent
#works well

Bayer Skinoren 15% Gel Azelaic Acid 10 ingredients

5.0 /5
from 1 rating
Absorbs Well (1) Great Value (1) Hydrating (1)
lunem's avatar

Lu Nem

8 months ago
Review

Love it. When hot outside it’s enough as a moisturizer as well. Makes skin soft, reduces acne and decreases redness. Stings in the beginning, but once skin is used to it, it stops.

#great value
#hydrating
#light
#absorbs well