Colourpop Bff Liquid Eyeliner - Numero Uno Versus Lancôme Idôle Ultra-Precise Felt Tip Liquid Eyeliner
Updated on August 21, 2024
Overview
What they are
These products are both fungal acne (malassezia) safe and reef safe eyeliners. They have a total of 7 ingredients in common
Free From
They both do not contain any common allergens, oils or parabens
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
Lancôme Idôle Ultra-Precise Felt Tip Liquid Eyeliner 19 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
Lancôme Idôle Ultra-Precise Felt Tip Liquid Eyeliner 19 ingredients
Benefits
Concerns
Concerns
Ingredients Side-by-side
Water
Skin ConditioningStyrene/Acrylates/Ammonium Methacrylate Copolymer
CI 77266
Methylpropanediol
SolventStyrene/Acrylates Copolymer
Alcohol Denat.
Antimicrobial
Acrylates Copolymer
Poloxamer 407
EmulsifyingCoco-Glucoside
CleansingPEG-12 Dimethicone
Skin Conditioning
Sodium Laureth Sulfate
Cleansing
Sodium Lauryl Sulfate
Cleansing
Caprylyl Glycol
EmollientXanthan Gum
EmulsifyingBHT
Antioxidant
Octadecyl Di-T-Butyl-4-Hydroxyhydrocinnamate
Antioxidant
Sodium Dehydroacetate
Preservative
Phenoxyethanol
Preservative
Iodopropynyl Butylcarbamate
Preservative
Water, Styrene/Acrylates/Ammonium Methacrylate Copolymer, CI 77266, Methylpropanediol, Styrene/Acrylates Copolymer, Alcohol Denat., Acrylates Copolymer, Poloxamer 407, Coco-Glucoside, PEG-12 Dimethicone, Sodium Laureth Sulfate, Sodium Lauryl Sulfate, Caprylyl Glycol, Xanthan Gum, BHT, Octadecyl Di-T-Butyl-4-Hydroxyhydrocinnamate, Sodium Dehydroacetate, Phenoxyethanol, Iodopropynyl Butylcarbamate
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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.Caprylyl 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 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.
This ingredient is a preservative with antimicrobial properties. It is the sodium salt of dehydroacetic acid.
It is especially effective at preventing bacterial and fungal growth in low concentrations.
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 WaterXanthan 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.
On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.
Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.
Learn more about Xanthan GumWe don't have a description for CI 77266 yet.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
