COSRX The AHA 2 BHA 2 Blemish Treatment Versus Slurp Decalt
Updated on June 17, 2025
Overview
What they are
These products are both reef safe facial treatments. They have a total of 9 ingredients in common
Cool Features
They both contain BHA, hyaluronic acid and PHA
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, 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 17 ingredients
Slurp Decalt 27 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
COSRX The AHA 2 BHA 2 Blemish Treatment 17 ingredients
Slurp Decalt 27 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningPropanediol
Solvent
Polysorbate 20
Emulsifying
Glycolic Acid
Buffering
Salicylic Acid
Masking
Gluconolactone
Skin Conditioning
Zinc PCA
Humectant
Allantoin
Skin Conditioning
Sodium Hyaluronate
Humectant
Sodium Hydroxide
BufferingDipropylene Glycol
MaskingHydroxyacetophenone
Antioxidant
Caprylyl Glycol
EmollientEthylhexylglycerin
Skin ConditioningDipotassium Glycyrrhizate
Humectant
1,2-Hexanediol
Skin Conditioning
Disodium EDTA
Water
Skin ConditioningPropanediol
Solvent
Gluconolactone
Skin Conditioning
Glycerin
Humectant
Butylene Glycol
Humectant
1,2-Hexanediol
Skin Conditioning
Arginine
Masking
Hydrogenated Lecithin
Emulsifying
Caprylic/Capric Triglyceride
Masking
Potassium Cetyl Phosphate
EmulsifyingSimmondsia Chinensis Seed Oil
Emollient
Salicylic Acid
Masking
Hydroxyacetophenone
Antioxidant
Allantoin
Skin Conditioning
Dipotassium Glycyrrhizate
Humectant
Squalane
Emollient
Volcanic Ash Extract
Skin ConditioningTrehalose
Humectant
Hydroxyethylcellulose
Emulsion StabilisingSea Water
HumectantArtemisia Princeps Leaf Extract
Skin ConditioningSodium Hyaluronate
Humectant
Juniperus Mexicana Oil
Masking
Rosmarinus Officinalis Leaf Oil
Masking
Amyris Balsamifera Bark Oil
Masking
Anthemis Nobilis Flower Oil
Masking
Ethyl Hexanediol
SolventWater, Propanediol, Gluconolactone, Glycerin, Butylene Glycol, 1,2-Hexanediol, Arginine, Hydrogenated Lecithin, Caprylic/Capric Triglyceride, Potassium Cetyl Phosphate, Simmondsia Chinensis Seed Oil, Salicylic Acid, Hydroxyacetophenone, Allantoin, Dipotassium Glycyrrhizate, Squalane, Volcanic Ash Extract, Trehalose, Hydroxyethylcellulose, Sea Water, Artemisia Princeps Leaf Extract, Sodium Hyaluronate, Juniperus Mexicana Oil, Rosmarinus Officinalis Leaf Oil, Amyris Balsamifera Bark Oil, Anthemis Nobilis Flower Oil, Ethyl Hexanediol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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
Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.
Some studies have shown this ingredient can promote wound healing with higher concentrations.
Allantoin is derived from the comfrey plant but produced synthetically for cosmetic products to ensure purity.
Learn more about AllantoinDipotassium Glycyrrhizate comes from licorice root.
Extracts of licorice have demonstrated to have antibacterial, anti‐inflammatory, antiviral, antioxidant properties.
One component, glabridin, has extra potent antioxidant and soothing properties. It has also been found to block pigmentation from UVB rays in guinea pigs.
Licorice Root also contains a flavonoid. Flavonoids are a natural substance from in plants. Flavonoids also have antioxidant properties.
Another component, glycyrrhizin, has been found to have anti-inflammatory and antimicrobial benefits. This may make licorice root extract effective at treating acne. However, more research is needed to support this.
Liquiritin is one of the flavone compounds found in licorice. It has been found to help lighten skin by preventing tyrosinase from reacting with tyrosine. When the two react, protein is converted to melanin. Melanin is the substance in your body that gives your features pigmentation.
Licorice root is native to Southern Europe and Asia. It has been used in traditional Chinese medicine to help with respiratory issues.
Learn more about Dipotassium GlycyrrhizateGluconolactone is a PHA. PHAs are a great gentle alternative to traditional AHAs.
When applied, Gluconolactone has the same affect on skin as AHAs such as lactic acid. It helps dissolve the dead skin cells in the top layer of your skin. This improves texture and brightens the skin.
PHAs are more gentle than AHAs due to their larger structure. They do not penetrate as deeply as AHAs and take a longer time to dissolve dead cells. Studies show PHAs do not cause as much irritation.
Gluconolactone has some interesting properties:
In a 2004 study, Gluconolactone was found to prevent UV damage in mouse skin cells and has not been found to increase sun sensitivity. However, we still recommend wearing SPF daily.
This ingredient is is an created by reacting gluconic acid with an alcohol.
Learn more about GluconolactoneHydroxyacetophenone is antioxidant with skin conditioning and soothing properties. It also boosts the efficiency of preservatives.
This ingredient is not irritating or sensitizing.
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 PropanediolSalicylic Acid (also known as beta hydroxy acid or BHA) is a well-known ingredient for treating skin that struggles with acne and clogged pores. It exfoliates both the skin's surface and deep within the pores to help clear out buildup, control oil, and reduce inflammation.
Unlike AHAs (alpha hydroxy acids), salicylic acid is oil-soluble. This allows it to penetrate into pores which makes it especially effective for treating blackheads and preventing future breakouts.
Salicylic acid is also known for its soothing properties. It has a similar structure to aspirin and can calm inflamed or irritated skin, making it a good option for acne-prone skin that is also sensitive.
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 this ingredient into your routine.
While salicylic acid does not increase sun sensitivity, it’s still important to wear sunscreen daily to protect your skin.
If you are looking for the ingredient called BHA or Butylated Hydroxyanisole, click here.
Learn more about Salicylic AcidSodium 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 HyaluronateWater. 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 WaterIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
COSRX The AHA 2 BHA 2 Blemish Treatment 17 ingredients
Slurp Decalt 27 ingredients
