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Updated on May 03, 2024

Overview

What they are

These products are both vegan, cruelty-free, and reef safe . 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, brightening skin, oily skin, reducing pores and scar healing

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.

The INKEY List Beta Hydroxy Acid (BHA) Serum
Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant US

Ingredient Info

Click any item below to learn more and see relevant ingredients

At a glance

Click on any of the items below to learn more

Notable Ingredients

Benefits

Concerns

Notable Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
Beta Hydroxy Acid (BHA) Serum
Water Skin Conditioning, Solvent

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.

Propanediol Solvent

Propanediol helps absorb ingredients into your skin, boosting their benefits. It can act as an emollient, making your skin softer. Propanediol can help products last longer by boosting the properties of preservatives within the formulation.

Betaine Humectant, Skin Conditioning
3 Benefits

Betaine is a common humectant (a substance that promotes retention of moisture). It's known to be gentle on the skin and can help balance hydration.

Salicylic Acid Masking, Preservative, Skin Conditioning
BHA  •  Preservative  •  5 Benefits  •  4 Concerns

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.

Sodium Hyaluronate Humectant, Skin Conditioning
0 / 0
Hyaluronic Acid

Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

0 Com. / 0 Irr.
Zinc PCA Humectant, Skin Conditioning
2 Benefits

Zinc PCA (or "zinc salt") differs slightly from zinc itself. PCA stands for pyrrolidone carboxylic acid. However, Zinc PCA comes from zinc.

Phenoxyethanol Preservative
Preservative

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and microbial growth. By itself, it has a scent that is similar to that of a rose.

Very Disliked Full details ->
Hydroxyethylcellulose Emulsion Stabilising, Stabilising

Hydroxyethylcellulose is used to improve the texture of products. It is created from a chemical reaction involving ethylene oxide and alkali-cellulose. Cellulose is a sugar found in plant cell walls and help give plants structure.

Maltodextrin Absorbent, Emulsion Stabilising, Skin Conditioning

Maltodextrin is a polysaccharide. It is derived from starch such as rice, corn, wheat, or potato starch.

Sodium Hydroxide Buffering

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

Ethylhexylglycerin Skin Conditioning

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

Biosaccharide Gum-1 Skin Conditioning

Biosaccharide Gum-1 is a sugar created from fermented sorbitol. Most sorbitol is made from potato starch.

Trisodium Ethylenediamine Disuccinate

Trisodium Ethylenediamine Disuccinate is used to help stabilize a product.

Skin Perfecting 2% BHA Liquid Exfoliant
Water Skin Conditioning, Solvent

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.

Methylpropanediol Solvent

Methylpropanediol is a synthetic solvent and humectant.

Butylene Glycol Humectant, Masking, Skin Conditioning
1 / 0

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

1 Com. / 0 Irr.
Salicylic Acid Masking, Preservative, Skin Conditioning
BHA  •  Preservative  •  5 Benefits  •  4 Concerns

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.

Polysorbate 20 Emulsifying
0 / 0
Not safe for Fungal Acne

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

0 Com. / 0 Irr.
Very Disliked Full details ->
Camellia Oleifera Leaf Masking

Camellia Oleifera Leaf is a green tea plant native to China. It is closely related to Camellia sinensis. Both plants have very similar properties.

Unknown Full details ->
Sodium Hydroxide Buffering

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

Tetrasodium EDTA

Tetrasodium EDTA is the salt formed from neutralizing ethylenediamine tetraacetic acid with sodium hydroxide. It is a chelating agent and used to prevent metal ions from binding to other ingredients. This helps keep the product and ingredients stable.

Disliked Full details ->

Ingredients Explained

These ingredients are found in both products.

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

Skin Conditioning, Solvent
Loved

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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!

Learn more about Water
Masking, Preservative, Skin Conditioning
Liked

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
Buffering
Mixed

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.

Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.

"Alkaline" refers to a high pH level. A low pH level would be considered acidic.

Learn more about Sodium Hydroxide

Ingredient Ratings

Here's what our community thinks of the ingredients in these two products.

Beta Hydroxy Acid (BHA) Serum
9
3
1
liked
mixed
disliked
not rated
Skin Perfecting 2% BHA Liquid Exfoliant
2
3
2
1
liked
mixed
disliked
not rated

When to use

146 Routines
32% use in am
68% use in pm
73% use every day
When to use See routines that use it ->
3,141 Routines
27% use in am
73% use in pm
69% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

The INKEY List Beta Hydroxy Acid (BHA) Serum 13 ingredients

4.2 /5
from 5 ratings
bloss's avatar

bloss

11 months ago · Combination Skin
Review

It’s like the only product that actually seemed to do anything.

CentellaAddict's avatar

CentellaAddict

9 months ago · Combination Skin
Review

Very good for acne
Saw an immediate overnight change in my inflammation overnight after using for the first time, haven't had any inflammatory...

Very good for acne
Saw an immediate overnight change in my inflammation overnight after using for the first time, haven't had any inflammatory whiteheads since I finished purging (which lasted 2 weeks) and my skin is slightly less oily. However it did nothing really for my sebaceous filaments.

Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant 8 ingredients

4.4 /5
from 35 ratings
Works Well (7) Expensive (5) No Scent (2) Light (2) Absorbs Well (1) Sticky (1)
skinogre's avatar

skinogre

26 days ago · Oily Skin
Review

The first night I used Paula’s choice exfoliant just once, it cleaned up my skin scraping it whole, I was left GLOWING but it felt kind of tight...

The first night I used Paula’s choice exfoliant just once, it cleaned up my skin scraping it whole, I was left GLOWING but it felt kind of tight like I had been using corsx salicylic acid for 3 days straight, it takes some getting used to, to the extent that the instructions literally say to start off once a week and slowly build your usage up overtime, it’s really strong but does the job well. I’ve noticed that if I overuse it, I get extremely coarse skin and whiteheads slowly appear in the places I use it most (my nose). This is why I highly advise to purchase the small sample bottle first and to build your way up, at MOST every other day. I’ve used it 3-4 times a week since and on the few days I don’t I use a daily-friendly exfoliant toner pad so my skin barrier isn’t destroyed but bacteria doesn’t also build. It dries up all the forehead gunk, removes residue on the sides of my nose and dried up the pimples I had been trying to rid of for so long, my skin is left gleaming, exfoliated as ever, and I know my skin wouldn’t be as flawless without it. 30ml sample version Lasted 2 months from Dec-Feb used every other day. I now use the 118ml version since Feb and there’s plenty left, will most likely last for about 7 months and 3 weeks in total (based on how long i went through the sample size). As much as I love this I deeply suggest researching and sampling because there are mixed reviews of people claiming that it ruined their skin which doesn’t surprise me -since it is pretty harsh exfoliant and skin is diverse. I tend to be wary of western products but one thing western products do well is harsh exfoliants. If you have a lot of bacterial residue, sebaceous filaments and the feeling of gunk on your face even after your exfoliant, this is a good one to consider. This combined with my Needley daily Toner pad is the only reason why my forehead looks like a glazed doughnut

MichelleR's avatar

MichelleR

6 months ago · Dry Skin
Review

Viral for a REASON
This product is popular for a reason. Back in the day [showing my age] we used to use Noxzema and Stridex for our acne. But...

Viral for a REASON
This product is popular for a reason. Back in the day [showing my age] we used to use Noxzema and Stridex for our acne. But those products were so harsh, burned, and didn't produce any results. This product not only clears pores but is also nourishing [suspect it is the green tea]. After I apply, my skin doesn't feel raw or sensitive. The formulation of this product is FANTASTIC. Truly viral for a reason. It will forever be in my skincare collection.