Cos De BAHA Glycolic Acid 10% AHA Serum Versus La Roche-Posay Effaclar Ultra Concentrated Serum
Updated on October 10, 2024
Overview
What they are
These products are both reef safe serums. They have a total of 3 ingredients in common
Cool Features
They both contain AHA
Suited For
They're both likely to be good for anti aging, brightening skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any common allergens, parabens, silicones 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 needs an update? Let us know.
Ingredient Info
Cos De BAHA Glycolic Acid 10% AHA Serum 11 ingredients
La Roche-Posay Effaclar Ultra Concentrated Serum 19 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Cos De BAHA Glycolic Acid 10% AHA Serum 11 ingredients
La Roche-Posay Effaclar Ultra Concentrated Serum 19 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterGlycolic Acid is arguably the most famous AHA with a ton of research to back up its benefits.
Its main role is to remove the top layer of dead skin cells, allowing newer skin cells to emerge.
Specifically, AHAs work by breaking down the structural "glue" holding the old skin cells in place. Getting rid of the old skin cells allows skin to regenerate newer skin cells in its place. A build up of dead skin cells can lead to tired and dull looking skin.
Due to this, glycolic acid helps with:
Fun fact: Glycolic acid increases skin hydration by playing a role in creating molecules that create hyaluronic acid naturally.
When starting glycolic Acid, it is normal to feel slight stinging.
The pH value and concentration of glycolic acid play a role in the effectiveness of the product. Concentrations between 5-20% glycolic acid have been shown to be effective in clinical studies.
Recent studies have shown Glycolic Acid may protect the skin against UV damage. However, you should always wear SPF, especially when using exfoliants.
Read more about some other popular AHA's here:
Learn more about Glycolic AcidPropanediol 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 PropanediolIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Cos De BAHA Glycolic Acid 10% AHA Serum 11 ingredients
La Roche-Posay Effaclar Ultra Concentrated Serum 19 ingredients

Reviews
Here's what our community thinks
Cos De BAHA Glycolic Acid 10% AHA Serum 11 ingredients
La Roche-Posay Effaclar Ultra Concentrated Serum 19 ingredients
This product was horrible for me! First I got it recommended by a pharmacist for my face, but back then it was too tingly and I stopped using it. Now because I’ve gotten a bit bacne I would use it there. Apparently I might be allergic, and now I have to throw it out for good! I don’t know who’s face can tolerate this concentrated serum :/
Worth the try for ACNE skin
I used it for about 2 years and I was more than satisfied. Upon returning on my Erasmus trip, it broke me out and made my skin dry. I don't know if anything happened during the trip but right now I don't use it. It's really good if you have taken acne treatment pills and you need smt to keep the acne away (from my experience at least).