Versus

Cos De BAHA Azelaic Acid 10% Serum with Niacinamide Versus The Ordinary Mandelic Acid 10% + HA

Serum
Serum
Korean Brand South Korea
Canadian Brand Canada

Updated on October 10, 2024

Overview

What they are

These products are both cruelty-free and reef safe serums. They have a total of 3 ingredients in common

Cool Features

They both contain hyaluronic acid

Suited For

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

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

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

Polysorbate 20 is made by combining ethoxylation of sorbitan, ethylene oxide, and lauric acid. It is a mild cleansing agent, surfactant, and emulsifier.

As a surfactant, it helps collect dirt and oils for washing. Emulsifiers prevent oils and water from separating.

Polysorbate 20 also adds scent to a product. Since it is made using sorbitol, it has a sweet scent. Sorbitol can also be found in fruits such as apples and peaches.

The lauric acid used to create Polysorbate 20 is often derived from coconuts.

Polysorbate 20 may not be fungal acne safe.

Learn more about Polysorbate 20
Skin Conditioning, Solvent

1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse. 

It is a:

  • Humectant, drawing moisture into the skin
  • Emollient, helping to soften skin
  • Solvent, dispersing and stabilizing formulas
  • Preservative booster, enhancing the antimicrobial activity of other preservatives 
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

684 Routines
41% use in am
60% use in pm
84% use every day
When to use See routines that use it ->
442 Routines
12% use in am
88% use in pm
58% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

Cos De BAHA Azelaic Acid 10% Serum with Niacinamide 13 ingredients

4.3 /5
from 14 ratings
Great Value (7) Absorbs Well (5) Works Well (5)
BubbIes's avatar

BubbIes

1 year ago
Review

I was so excited to try a product with what seemed like no comedogenic ingredients, but I suspect all the extracts broke me out pretty badly. I’m talking deep, painful cysts. I think I saw a nice effect on skin brightness, but that’s the only upside unfortunately. This also left a chalky white residue at times.

#great value
#broke me out
#irritating
Clover's avatar

Clover

2 years ago
Review

I’m on my third bottle
Want a simple, hydrating, scentless, and affordable azelaic acid serum? Look no further! Azelaic acid is well tolerated by many and for me I’ve noticed great improvements regarding redness. There was a short period of time when I cut this out of my routine, and that’s when I noticed how much it had been doing to reduce redness in my skin. This serum also contains aloe Show more

The Ordinary Mandelic Acid 10% + HA 13 ingredients

3.9 /5
from 7 ratings
Works Well (3) Hydrating (3) Great Value (2)

My beloved soothing exfoliant for closed comedones. The first product that finally unclogged some of my pores. I recommend using it every second day only at night! Has no scent, doesn’t make my skin look greasy, but it hydrates. It’s a watery texture and not even expensive ! Can only recommend!!! This one is a good choice if your skin is sensitive to BHA or AHA like salycilic acid or so. It Show more

#great value
#hydrating
#light
#absorbs well
JohnnyLeeZongHeng_352's avatar
Review

Gentle and didn't break me out. I love it

#great value
#hydrating
#light
#no scent