Urban Decay 24/7 Glide-On Waterproof Eyeliner Pencil
Analysis updated September 2026 · How Scout scores
At a glance
Summary
This eyeliner contains a mix of synthetic ingredients, including PEG/PPG compounds, which can be concerning due to potential impurities. However, it also includes beneficial components like tocopherol, which provides antioxidant benefits. The presence of synthetic waxes and other processed ingredients suggests a moderate level of processing, impacting the overall safety and quality of the product.
Key ingredients 16
TocopherolVery Good
Tocopherol, also known as Vitamin E, is a powerful antioxidant used in cosmetics for its skin conditioning properties. It helps in protecting the skin from environmental stressors and free radicals. It is widely regarded as beneficial for skin health.
Risks
There is a very low risk of skin irritation, making it suitable for most skin types.
Benefits
It provides antioxidant protection and helps in maintaining skin health.
CI 77499 (Iron Oxides)Good
Beneficial ingredient — whole-food or functional value in this product class.
Risks
There are minimal risks associated with iron oxides, primarily related to potential skin irritation in sensitive individuals.
Benefits
They provide pigmentation and are safe for use in cosmetics.
CI 77019 (Mica)Good
Beneficial ingredient — whole-food or functional value in this product class.
Risks
There are minimal risks associated with mica, primarily related to potential skin irritation in sensitive individuals.
Benefits
It provides a shimmering effect and is safe for use in cosmetics.
IsododecaneNeutral
Isododecane is a hydrocarbon commonly used as a solvent and emollient in cosmetics. It helps in the smooth application of products and provides a lightweight feel. It is generally considered safe for use in cosmetics.
Risks
There are minimal risks associated with isododecane, primarily related to potential skin irritation in sensitive individuals.
Benefits
It enhances the spreadability and texture of cosmetic products, contributing to a smooth application.
CyclopentasiloxaneNeutral
Cyclopentasiloxane is a silicone-based compound used for its conditioning properties and silky texture. It evaporates quickly, leaving a smooth feel on the skin. It is widely used in personal care products and is considered safe.
Risks
There is a low risk of skin irritation, but it is generally well-tolerated.
Benefits
It provides a silky, smooth application and helps to temporarily fill in fine lines and wrinkles.
PEG/PPG-19/19 DimethiconeNeutral
This is a silicone-based polymer used for its emollient and conditioning properties. It helps to improve the texture and spreadability of products. It is generally considered safe for use in cosmetics.
Risks
There is a potential risk of skin irritation, especially in individuals with sensitive skin.
Benefits
It enhances the texture and feel of cosmetic products, providing a smooth application.
Synthetic WaxNeutral
Synthetic wax is used to provide structure and stability to cosmetic formulations. It helps in maintaining the shape and consistency of products. It is considered safe for use in cosmetics.
Risks
There are minimal risks associated with synthetic wax, primarily related to potential skin irritation.
Benefits
It helps in maintaining the consistency and stability of cosmetic products.
Hydrogenated PolydicyclopentadieneNeutral
This ingredient is used as a film-forming agent in cosmetics, providing long-lasting wear. It is a synthetic polymer that enhances the durability of products. It is generally considered safe for use in cosmetics.
Risks
There is a low risk of skin irritation, but it is generally well-tolerated.
Benefits
It provides long-lasting wear and enhances the durability of cosmetic products.
Nylon-12Neutral
Nylon-12 is a synthetic polymer used to improve the texture and feel of cosmetic products. It provides a soft focus effect and helps in oil absorption. It is considered safe for use in cosmetics.
Risks
There are minimal risks associated with Nylon-12, primarily related to potential skin irritation.
Benefits
It provides a smooth, matte finish and helps in oil control.
C20-40 AlcoholsNeutral
C20-40 alcohols are fatty alcohols used as emollients and thickening agents in cosmetics. They help to improve the texture and stability of products. They are generally considered safe for use in cosmetics.
Risks
There is a low risk of skin irritation, but they are generally well-tolerated.
Benefits
They provide emollient properties and enhance the texture of cosmetic products.
Perfluorononyl DimethiconeNeutral
This is a fluorinated silicone used for its water-repellent properties in cosmetics. It helps in providing long-lasting wear and a smooth application. It is considered safe for use in cosmetics.
Risks
There is a low risk of skin irritation, but it is generally well-tolerated.
Benefits
It provides water-repellent properties and enhances the durability of cosmetic products.
Polyglyceryl-4 Diisostearate/Polyhydroxystearate/SebacateNeutral
This is an emulsifying agent used to stabilize cosmetic formulations. It helps in blending oil and water components. It is considered safe for use in cosmetics.
Risks
There are minimal risks associated with this ingredient, primarily related to potential skin irritation.
Benefits
It helps in stabilizing cosmetic formulations and improving texture.
Pentaerythrityl Tetra-Di-T-Butyl HydroxyhydrocinnamateNeutral
This is an antioxidant used to prevent the degradation of cosmetic products. It helps in maintaining the stability and shelf life of formulations. It is considered safe for use in cosmetics.
Risks
There are minimal risks associated with this ingredient, primarily related to potential skin irritation.
Benefits
It helps in maintaining the stability and shelf life of cosmetic products.
CI 77510 (Ferric Ferrocyanide)Neutral
Ferric ferrocyanide is a blue pigment used in cosmetics for its coloring properties. It is considered safe for use in cosmetics and is non-toxic. It is commonly used in eye makeup products.
Risks
There are minimal risks associated with ferric ferrocyanide, primarily related to potential skin irritation in sensitive individuals.
Benefits
It provides blue pigmentation and is safe for use in cosmetics.
CI 77266 (Black 2)Neutral
Black 2 is a synthetic black pigment used in cosmetics for its coloring properties. It is considered safe for use in cosmetics and is non-toxic. It is commonly used in eye makeup products.
Risks
There are minimal risks associated with Black 2, primarily related to potential skin irritation in sensitive individuals.
Benefits
It provides black pigmentation and is safe for use in cosmetics.
PolyethyleneVery Bad
Heavily flagged ingredient class under Scout's doctrine.
Risks
There is a low risk of skin irritation, but it is generally well-tolerated.
Benefits
It provides structure and stability to cosmetic products.
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