Explore Routine Login
Versus

Bubble Knock Out Acne Spot Treatment Versus e.l.f. cosmetics Blemish Breakthrough Acne Fighting Spot Gel

Facial Treatment
Facial Treatment
American Brand United States
American Brand United States

Updated on August 31, 2023

Overview

What they are

These products are both vegan, cruelty-free, fungal acne (malassezia) safe, and reef safe facial treatments. They have a total of 4 ingredients in common

Cool Features

They both contain BHA

Suited For

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

Free From

They both do not contain any parabens, silicones or sulfates

What's Inside

They both contain fragrances

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

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
Knock Out Acne Spot Treatment
Salicylic Acid Masking, Preservative, Skin Conditioning
BHA IconPreservative IconGood for Oily Skin IconGood for Minimizing Pores IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin IconCan worsen Dry Skin IconMay cause irritation IconMay worsen Eczema IconMay worsen Rosacea Icon
BHABHA Icon PreservativePreservative Icon 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 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.

Pentylene Glycol Skin Conditioning, Solvent

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.

Sodium Polyacrylate Crosspolymer-1 Emollient, Skin Conditioning

We don't have a description for Sodium Polyacrylate Crosspolymer-1.

Unknown Full details ->
Gaultheria Procumbens Leaf Extract Perfuming, Skin Conditioning, Tonic
Fragrance Icon
FragranceFragrance Icon

Gaultheria Procumbens Leaf Extract is a fragrance.

Disliked Full details ->
Glycerin Humectant, Skin Conditioning, Skin Protecting
0 / 0 Helps hydrate Dry Skin IconHelps brighten skin Icon
2 Benefits

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

0 Com. / 0 Irr.
Azelaic Acid Buffering, Masking
Helps reduce Skin Redness IconGood for Minimizing Pores IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne Icon
5 Benefits

Azelaic acid is a naturally occurring acid derived from grains. This ingredient is effective in treating acne, rosacea, and other skin conditions.

Salix Nigra Bark Extract Skin Protecting

We don't have a description for Salix Nigra Bark Extract.

Aloe Barbadensis Leaf Juice Skin Conditioning
Helps reduce Skin Redness IconHelps reduce irritation Icon
2 Benefits

Aloe Barbadensis Leaf Juice comes from leaves of the aloe plant. Aloe Barbadensis Leaf Juice is best known for helping to soothe sunburns. It is also anti-inflammatory, moisturizing, antiseptic, and can help heal wounds.

Zinc PCA Humectant, Skin Conditioning
Good for Scar Healing IconHelps fight Acne Icon
2 Benefits

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

Dipotassium Glycyrrhizate Humectant, Skin Conditioning
Helps reduce Skin Redness IconHelps reduce irritation IconGood for Dark Spots Icon
3 Benefits

Dipotassium Glycyrrhizate comes from licorice root.

Sambucus Nigra Fruit Juice Astringent, Skin Conditioning

Sambucus Nigra is known as the black elderberry.

Unknown Full details ->
Spiraea Ulmaria Flower Extract Skin Conditioning

We don't have a description for Spiraea Ulmaria Flower Extract.

Unknown Full details ->
Citric Acid Buffering, Masking
AHA IconGood for Skin Texture IconGood for Minimizing Pores IconGood for Scar Healing IconHelps brighten skin IconMay cause irritation IconMay worsen Rosacea Icon
AHAAHA Icon 4 Benefits 2 Concerns

Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).

Disliked 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.

Phenoxyethanol Preservative
Preservative Icon
PreservativePreservative Icon

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

Very Disliked Full details ->
Blemish Breakthrough Acne Fighting Spot Gel
Salicylic Acid Masking, Preservative, Skin Conditioning
BHA IconPreservative IconGood for Oily Skin IconGood for Minimizing Pores IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin IconCan worsen Dry Skin IconMay cause irritation IconMay worsen Eczema IconMay worsen Rosacea Icon
BHABHA Icon PreservativePreservative Icon 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 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.

Alcohol Denat. Antimicrobial, Astringent, Masking
Alcohol IconCan worsen Dry Skin IconMay worsen Oily Skin IconMay cause irritation IconMay worsen Eczema IconMay worsen Rosacea Icon
AlcoholAlcohol Icon 5 Concerns

Alcohol Denat. is an alcohol with a denaturant property. It is created by mixing ethanol with other additives.

Very Disliked Full details ->
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.
Polyacrylate Crosspolymer-6 Emulsion Stabilising

Polyacrylate Crosspolymer-6 is a texture enhancer and pH adjuster.

Disliked Full details ->
Camphor Masking
May cause irritation IconEU Allergen IconMay worsen Eczema IconMay worsen Rosacea Icon
4 Concerns

Camphor is a waxy solid with a strong scent. It is made using turpentine oil.

Very Disliked 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.

Melaleuca Alternifolia Leaf Oil Antioxidant, Perfuming
Antioxidant IconFragrance IconOil IconGood for Oily Skin Icon
AntioxidantAntioxidant Icon FragranceFragrance Icon OilOil Icon Good for Oily SkinGood for Oily Skin Icon

This tea tree oil comes from the leaves of the Tea Tree plant. Tea tree oil has antioxidant, anti-inflammatory, and antimicrobial properties.

Hamamelis Virginiana Extract Antiseborrhoeic, Astringent, Skin Conditioning
Can worsen Dry Skin Icon
Can worsen Dry SkinCan worsen Dry Skin Icon

Hamamelis Virginiana Extract comes from the witch hazel plant.

Disliked Full details ->
Aloe Barbadensis Leaf Extract Emollient, Humectant, Skin Conditioning

Aloe Barbadensis Leaf Extract is an extract of the leaves of the aloe, Aloe barbadensis, Liliaceae.

Camellia Sinensis Leaf Extract Antimicrobial, Antioxidant, Astringent
Antioxidant IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging IconHelps fight Acne Icon
AntioxidantAntioxidant Icon 5 Benefits

Camellia Sinensis Leaf Extract is derived from the leaves of the tea plant. Black tea, green tea, and oolong tea are all harvested from this plant.

T-Butyl Alcohol Perfuming, Solvent
Alcohol IconFragrance Icon
AlcoholAlcohol Icon FragranceFragrance Icon

T-Butyl Alcohol it is most commonly used as a solvent.

Very Disliked Full details ->
Sodium Benzoate Masking, Preservative
Preservative Icon
PreservativePreservative Icon

Sodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.

Disliked Full details ->
Phenoxyethanol Preservative
Preservative Icon
PreservativePreservative Icon

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

Very Disliked Full details ->
Denatonium Benzoate Masking
Alcohol Icon
AlcoholAlcohol Icon

Denatonium Benzoate is a denaturant and masking ingredient.

Unknown 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.

Masking, Preservative, Skin Conditioning
Loved

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
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. If you see this, drink a glass of water. Stay hydrated!

Learn more about Water
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
Preservative
Very Disliked

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

It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.

Ingredient Ratings

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

Knock Out Acne Spot Treatment
8
2
3
3
liked
mixed
disliked
not rated
Blemish Breakthrough Acne Fighting Spot Gel
4
3
7
1
liked
mixed
disliked
not rated

When to use

23 Routines
39% use in am
61% use in pm
78% use every day
20 Routines
45% use in am
55% use in pm
50% use every day

Reviews

Here's what our community thinks

Bubble Knock Out Acne Spot Treatment 16 ingredients

4.0 /5
from 2 ratings
Absorbs Well (1) Doesn't Work (1) Light (1)
chlolands's avatar

chlolands

5 months ago · Combination Skin
Review

Cute little product, but doesn't work very well as a spot treatment.

e.l.f. cosmetics Blemish Breakthrough Acne Fighting Spot Gel 15 ingredients

Blemish Breakthrough Acne Fighting Spot Gel hasn't been rated yet.
Rate it now