Updated on June 20, 2024
Overview
What they are
These products are both vegan, cruelty-free, and reef safe . They have a total of 2 ingredients in common
Cool Features
They both contain BHA and hyaluronic acid
Suited For
They're both likely to be good for fighting acne, brightening skin, sensitive skin, oily skin, reducing pores 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
COSRX The AHA 2 BHA 2 Blemish Treatment Serum 17 ingredients
COSRX BHA Blackhead Power Liquid 10 ingredients
At a glance
Click on any of the items below to learn more
COSRX The AHA 2 BHA 2 Blemish Treatment Serum 17 ingredients
COSRX BHA Blackhead Power Liquid 10 ingredients
Notable Ingredients
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Benefits
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Concerns
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Notable Ingredients
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
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Concerns
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Ingredients Side-by-side
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 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.
Polysorbate 20 is made by combining ethoxylation of sorbitan, ethylene oxide, and lauric acid. It is a mild cleansing agent, surfactant, and emulsifier.
7 Benefits 2 Concerns
Glycolic Acid is arguably the most famous AHA with a ton of research to back up its benefits.
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.
2 Benefits
Gluconolactone is a PHA. PHAs are a great gentle alternative to traditional AHAs.
Zinc PCA (or "zinc salt") differs slightly from zinc itself. PCA stands for pyrrolidone carboxylic acid. However, Zinc PCA comes from zinc.
Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
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.
Dipropylene Glycol is a synthetically created stabilizer and solvent. It is a part of the glycol class in the alcohol family.
Hydroxyacetophenone is antioxidant and helps with skin conditioning.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
1,2-Hexanediol is a multi-tasker ingredient. It acts as a preservative to increase shelf-life and can aid other preservatives in preventing microbe growth. 1,2-Hexanediol also helps the skin retain moisture as a humectant.
Disodium EDTA plays a role in making products more stable by aiding other preservatives.
Salix Alba Bark Water is created by distilling parts from the white willow tree. The white willow tree is native to Europe and Central Asia.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
2 Benefits May worsen Rosacea
Betaine Salicylate is considered a salicylic acid alternative.
6 Benefits
Niacinamide has emerged as an all-star ingredient due to its many benefits.
1,2-Hexanediol is a multi-tasker ingredient. It acts as a preservative to increase shelf-life and can aid other preservatives in preventing microbe growth. 1,2-Hexanediol also helps the skin retain moisture as a humectant.
Arginine is an amino acid that is important for human development. Your body uses is it to produce hair keratin and skin collagen.
Panthenol is a common ingredient that helps hydrate and soothe the skin. It can be found naturally in our skin and hair.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.
Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.
These are some other common types of Hyaluronic Acid:
Learn more about Sodium Hyaluronate1,2-Hexanediol is a multi-tasker ingredient. It acts as a preservative to increase shelf-life and can aid other preservatives in preventing microbe growth. 1,2-Hexanediol also helps the skin retain moisture as a humectant.
In products that are water-based, this ingredient can help stabilize perfumes and fragrances. It can also help make the texture of products softer and more smooth.
Ingredient Ratings
Here's what our community thinks of the ingredients in these two products.
When to use
COSRX The AHA 2 BHA 2 Blemish Treatment Serum 17 ingredients
COSRX BHA Blackhead Power Liquid 10 ingredients
Reviews
Here's what our community thinks
COSRX The AHA 2 BHA 2 Blemish Treatment Serum 17 ingredients
COSRX BHA Blackhead Power Liquid 10 ingredients
sword
Gently Exfoliates
I decided to try a leave-on exfoliator rather than an exfoliating cleanser because I noticed I kept getting irritation from...
Gently Exfoliates
I decided to try a leave-on exfoliator rather than an exfoliating cleanser because I noticed I kept getting irritation from exfoliating cleansers. This Cosrx one is really gentle and pleasant. It takes a few minutes for it to absorb into my skin, but afterwards I get very little irritation and my skin texture and pore appearance have definitely improved.
tsmeu
This was only the second BHA product that I ever tried and got this because I just don't enjoy the skin feel of the Paula's Choice 2% BHA liquid...
This was only the second BHA product that I ever tried and got this because I just don't enjoy the skin feel of the Paula's Choice 2% BHA liquid (which I used on/off for years), and this was recommended by fiddysnails who has a similar skin type and concerns to mine. I do like that this leaves no residue but I just don't find this to be very effective.
I have dry combo skin and very rarely deal with breakouts - the only reason I use BHA is to help keep the pores on my nose and chin clear of sebacious filaments. I also use peptides in my routine so I don't want a BHA that I need to use every day, as I haven't been able to find conclusive information on whether acids really make peptides less effective and for now choose to use them on alternate days. I find that this product when used every other day just isn't enough to keep my pores clear of gunk. Maybe my skin just responds better to salicylic acid than to betaine salicylate which this uses.
