Overview
What they are
These products are both reef safe facial treatments. They have a total of 8 ingredients in common
Cool Features
They both contain AHA, BHA, niacinamide and PHA
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, 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
iUNIK Centella Calming AC Spot Cream 44 ingredients
Kiehl's Truly Targeted Acne-Clearing Pimple Patch with Salicylic Acid 12 ingredients
At a glance
Click on any of the items below to learn more
iUNIK Centella Calming AC Spot Cream 44 ingredients
Kiehl's Truly Targeted Acne-Clearing Pimple Patch with Salicylic Acid 12 ingredients
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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.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
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.
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.
Centella Asiatica Extract (Centella) is derived from an herb native to Southeast Asia. It is famous for its anti-inflammatory and soothing properties.
Good for Oily Skin
Melaleuca Alternifolia Leaf Extract comes from the Tea Tree, Melaleuca alternifolia, Myrtaceae. This tea tree is native to Australia.
Salix Alba Bark Extract comes from the white willow tree, which is native to Europe and Central Asia.
Lactobacillus is a type of bacteria. It makes up most of the food fermenting lactic acid bacteria. It is used to create wine, yogurt, cheese, sauerkraut, pickles, beer, cider, kimchi, cocoa, kefir.
Rice Ferment Filtrate is created by fermenting rice, or oryza sativa. A common name for this ingredient is sake, the traditional Japanese fermented rice alcoholic beverage.
Glucose is a simple sugar and is the most important source of energy in all organisms.
Panthenol is a common ingredient that helps hydrate and soothe the skin. It can be found naturally in our skin and hair.
6 Benefits 3 Concerns
Lactic Acid is an AHA that is derived from fermenting lactose, a carbohydrate from milk. It removes the top layer of old and dead skin cells and helps increase cell turnover.
Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.
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.
Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.
2 Benefits
Gluconolactone is a PHA. PHAs are a great gentle alternative to traditional AHAs.
Capryloyl Salicylic Acid comes from salicylic acid, the famous acne-fighting BHA.
This long ingredient is a copolymer of sodium acrylate and sodium acryloyldimethyl taurate monomers.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
4 Benefits 2 Concerns
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.
Cellulose Gum is a water-soluble polymer that comes from cellulose. It is used to change the texture of a product and to help stabilize emulsions.
Caprylyl/Capryl Glucoside is an alkyl glucoside. This just means it is creating by reacting alcohol and sugar. It is a cleansing and foaming ingredient.
Sorbitan Oleate is created from compounds in oleic acid and sorbitol. It is used to stabilize a product by preventing ingredients from separating.
Glyceryl Acrylate/Acrylic Acid Copolymer is made up of glycerin and polyacrylic acid. It helps hydrate your skin as a humectant.
Disodium EDTA plays a role in making products more stable by aiding other preservatives.
Ammonium Acryloyldimethyltaurate/Vp Copolymer (let's call it AAVC for short) is a synthetically created polymer. It's used as a film-forming agent and used to thicken the consistency of products.
Magnesium Aluminum Silicate is a type of silica. It comes from naturally occuring minerals such as silicate ores and clay.
Hydroxyacetophenone is antioxidant and helps with skin conditioning.
Tromethamine is an aliphatic compound. An aliphatic compound is an organic compound with open-chained carbon atoms. It is synthetically created. Tromethamine is used to balance pH and improve texture.
Water, Butylene Glycol, Glycerin, Niacinamide, 1,2-Hexanediol, Propanediol, Centella Asiatica Extract, Melaleuca Alternifolia Leaf Extract, Salix Alba Bark Extract, Lactobacillus, Rice Ferment Filtrate, Pinus Palustris Leaf Extract, Ulmus Davidiana Root Extract, Oenothera Biennis Root Extract, Pueraria Lobata Root Extract, Glucuronic Acid, Rhamnose, Cordyceps Militaris Extract, Glucose, Totarol, Panthenol, Lactic Acid, Dipotassium Glycyrrhizate, Allantoin, Salicylic Acid, Glycolipids, Adenosine, Gluconolactone, Capryloyl Salicylic Acid, Polyisobutene, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Caprylyl Glycol, Citric Acid, Pentylene Glycol, Cellulose Gum, Caprylyl/Capryl Glucoside, Sorbitan Oleate, Glyceryl Acrylate/Acrylic Acid Copolymer, Disodium EDTA, Ethoxydiglycol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Magnesium Aluminum Silicate, Hydroxyacetophenone, Tromethamine
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.
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.
2 Benefits
Gluconolactone is a PHA. PHAs are a great gentle alternative to traditional AHAs.
6 Benefits
Niacinamide has emerged as an all-star ingredient due to its many benefits.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
7 Benefits 2 Concerns
Glycolic Acid is arguably the most famous AHA with a ton of research to back up its benefits.
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.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
Methyl Gluceth-20 is a humectant. Humectants help draw moisture from the air to your skin.
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.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
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 WaterButylene Glycol (or BG) is used within cosmetic products for a few different reasons:
- It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
- It is a humectant, which means that it helps attract moisture into the skin.
- It helps improve product application.
Overall, Butylene Glycol is a safe and well-rounded ingredient. It is unlikely to irritate skin, and works well with pretty much all other ingredients.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinNiacinamide has emerged as an all-star ingredient due to its many benefits.
It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.
Other benefits include smoothing wrinkles and minimizing redness.
The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.
Learn more about NiacinamideDipotassium 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 GlycyrrhizateSalicylic 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 AcidGluconolactone 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. Gluconolactone has not been found to increase sun sensivity. However, we still recommend wearing SPF daily.
This ingredient is is an created by reacting gluconic acid with an alcohol.
Learn more about GluconolactoneCaprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolIngredient Ratings
Here's what our community thinks of the ingredients in these two products.
When to use
iUNIK Centella Calming AC Spot Cream 44 ingredients
Kiehl's Truly Targeted Acne-Clearing Pimple Patch with Salicylic Acid 12 ingredients
Reviews
Here's what our community thinks
iUNIK Centella Calming AC Spot Cream 44 ingredients
Kiehl's Truly Targeted Acne-Clearing Pimple Patch with Salicylic Acid 12 ingredients
MichelleR
Absolute perfect formula. It doesn't burn, and I wake up to results. Its too sticky to wear under makeup. I haven't tried it during the day or over...
Absolute perfect formula. It doesn't burn, and I wake up to results. Its too sticky to wear under makeup. I haven't tried it during the day or over makeup. But I love that it is clear. I highly recommend this product over any pimple patch. Pimple patches in public look awful! It's like wearing pajamas or a bonnet in public, save that for home!
P_55
Seems to help without causing irritation. Doesn't work as well as a pimple patch, but works well on emerging pimples. If you have an open newly...
Seems to help without causing irritation. Doesn't work as well as a pimple patch, but works well on emerging pimples. If you have an open newly popped pimple, use a pimple patch instead.
