Versus

Isntree Chestnut BHA 2% Clear Liquid Versus Cos De BAHA S2 Salicylic Acid 2% Liquid

Exfoliator
Exfoliator
Korean Brand South Korea
Korean Brand South Korea

Updated on October 10, 2024

Overview

What they are

These products are both cruelty-free, fungal acne (malassezia) safe, and reef safe exfoliators. They have a total of 3 ingredients in common

Cool Features

They both contain BHA

Suited For

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

Free From

They both do not contain any harsh alcohols, 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

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.

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
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 
Masking, Preservative, Skin Conditioning

Salicylic Acid (also known as beta hydroxy acid or BHA) is one of the most well-known ingredients for treating skin that struggles with blackheads and acne. It helps to exfoliate both the skin's surface and pores, and also acts as an anti-inflammatory agent.

This multitasking property makes it a great ingredient for cleaning out pores, controlling oil production, and reducing inflammation.

Unlike AHAs which are water soluble, Salicylic Acid is oil soluble. This means that it's able to exfoliate the inside of pores and reduce blackheads.

Concentrations of 0.5-2% are recognized by the U.S. FDA as an over-the-counter topical acne product.

It can cause irritation and/or dryness if one's skin already has a compromised moisture barrier, so it's best to focus on repairing that before introducing a Salicylic Acid into your routine.

In general, Salicylic Acid is a great ingredient for oily acne-prone skin.

While salicylic acid does not increase sun-sensitivity, we still recommend wearing SPF.

If you are looking for the ingredient called BHA or Butylated Hydroxyanisole, click here.

Learn more about Salicylic Acid

When to use

481 Routines
16% use in am
85% use in pm
40% use every day
When to use See routines that use it ->
130 Routines
28% use in am
72% use in pm
61% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

Isntree Chestnut BHA 2% Clear Liquid 21 ingredients

4.5 /5
from 11 ratings
Works Well (6) Light (5) Great Value (5)
BrittBrine's avatar

BrittBrine

1 year ago
Review

HG! This is my favorite chemical exfoliant I have ever used! I will use this forever!
It's a watery toner but the next morning my face looks so nice and feels so smooth. It has helped with acne and doesn't sting if using on healthy skin. It also doesn't dry out my skin if I leave it on for a while before putting other products on.

#great value
#hydrating
#light
#absorbs well
ChantelleAng's avatar

ChantelleAng

1 year ago
Review

GREAT exfoliator for ppl with sensitive skin. so gentle and is very effective. its so much better than paula's choice for me, so much more gentle highly recc!!!

#great value
#hydrating
#light
#absorbs well

Cos De BAHA S2 Salicylic Acid 2% Liquid 11 ingredients

5.0 /5
from 3 ratings
Great Value (2) Works Well (2) Absorbs Well (1)
ivorycat's avatar

Cami

9 months ago
Review

I actually love this exfoliating serum for my very oily skin! I use it 3 times a week and only use two baby drops of it that I apply mostly on my T zone. The mornings after I use it, my skin feels lighter and purified. Try not to mix this serum with retinoids or vitamin C, although I mixed it with only derivatives (was told it’d be ok by employees), my skin felt a bit sensitive when I did.

#great value
#absorbs well
#works well
Tonephone_641's avatar

Tonephone_641

1 year ago
Review

This products exfoliates and reduces my fungal acne overnight. It's affordable too