Colourpop Bff Liquid Eyeliner - Numero Uno Versus Physician's Formula Eye Booster Ultra Fine Eyeliner - Deep Brown
Updated on August 21, 2024
Overview
What they are
These products are both cruelty-free and reef safe eyeliners. They have a total of 13 ingredients in common
Suited For
They're both likely to be good for dry skin
Free From
They both do not contain any common allergens, oils, parabens or sulfates
What's Inside
They both contain harsh alcohols
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
Colourpop Bff Liquid Eyeliner 16 ingredients
Physician's Formula Eye Booster Ultra Fine Eyeliner 23 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
Colourpop Bff Liquid Eyeliner 16 ingredients
Physician's Formula Eye Booster Ultra Fine Eyeliner 23 ingredients
Benefits
Concerns
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningEthylhexyl Acrylate/Methyl Methacrylate Copolymer
Butylene Glycol
Humectant
Glycerin
Humectant
Sodium Polyaspartate
HumectantBeheneth-30
CleansingAmmonium Acrylates/Methylstyrene/Styrene Copolymer
Phenoxyethanol
Preservative
Pentylene Glycol
Skin ConditioningAlcohol Denat.
Antimicrobial
Ceteth-20
Cleansing1,2-Hexanediol
Skin Conditioning
Caprylyl Glycol
EmollientEthylhexylglycerin
Skin ConditioningAcrylates/Octylacrylamide Copolymer
Disodium EDTA
Polyglyceryl-3 Disiloxane Dimethicone
Skin Conditioning
Sodium Hydroxide
BufferingMyristoyl Pentapeptide-17
Skin Conditioning
Benzoic Acid
Masking
Sodium Benzoate
Masking
CI 77266
Iron Oxides
Water, Ethylhexyl Acrylate/Methyl Methacrylate Copolymer, Butylene Glycol, Glycerin, Sodium Polyaspartate, Beheneth-30, Ammonium Acrylates/Methylstyrene/Styrene Copolymer, Phenoxyethanol, Pentylene Glycol, Alcohol Denat., Ceteth-20, 1,2-Hexanediol, Caprylyl Glycol, Ethylhexylglycerin, Acrylates/Octylacrylamide Copolymer, Disodium EDTA, Polyglyceryl-3 Disiloxane Dimethicone, Sodium Hydroxide, Myristoyl Pentapeptide-17, Benzoic Acid, Sodium Benzoate, CI 77266, Iron Oxides
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
We don't have a description for Acrylates/Octylacrylamide Copolymer yet.
Alcohol Denat. is an alcohol with a denaturant property. It is created by mixing ethanol with other additives.
This ingredient gets a bad rep because it is irritating and drying - mostly due to its astringent property. Astringents draw out natural oils in tissue, constricting pores and leaving your skin dried out.
However, alcohol denat. is not all that bad.
Due to its low molecular weight, alcohol denat. tends to evaporate quickly. One study on pig skin found half of applied alcohol evaporated in 10 seconds and less than 3% stayed on skin.
This also helps other ingredients become better absorbed upon application.
Studies are conflicted about whether this ingredient causes skin dehydration. One study from 2005 found adding emollients to propanol-based sanitizer decreased skin dryness and irritation. Another study found irritation only occurs if your skin is already damaged.
Small amounts of alcohol are generally tolerated by oily skin or people who live in humid environments.
The rule of thumb is if this alcohol is near the end of an ingredients list, it will probably not affect your skin much.
Also...
This ingredient has antimicrobial and solvent properties.
The antimicrobial property helps preserve products and increase their shelf life. As a solvent, it helps dissolve other ingredients.
Other types of astringent alcohols include:
Learn more about Alcohol Denat.We don't have a description for Beheneth-30 yet.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene GlycolCaprylyl 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 GlycolDisodium EDTA plays a role in making products more stable by aiding other preservatives.
It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.
Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.
Learn more about Disodium EDTAEthylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.
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.
The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.
This property also makes Pentylene Glycol a great texture enhancer. It can also help thicken or stabilize a product.
Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.
Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.
Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.
Learn more about Pentylene GlycolPhenoxyethanol 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.
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 HydroxideWater. 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 WaterWe don't have a description for CI 77266 yet.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Colourpop Bff Liquid Eyeliner 16 ingredients
Physician's Formula Eye Booster Ultra Fine Eyeliner 23 ingredients
Reviews
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