Perfectly Defined Gel Eyeliner

Bobbi Brown

Perfectly Defined Gel Eyeliner

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About this product

The Bobbi Brown Perfectly Defined Gel Eyeliner is a misc. Our analysis of its 34 ingredients (24 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to oily / acne-prone, dry, and sensitive skin.

Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Misc
Ingredients
34
Low-risk
24
Fragrance
Fragrance-free
Origin
United States
Data updated
Jun 2026

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 6/2
Good for dry skin
Sucrose Tetrastearate Triacetate Silica Silylate Octyldodecanol Sodium Hyaluronate Hydrogenated Jojoba Oil Cyclopentasiloxane
Caution for dry skin
Silica Silylate Silica
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Sodium Ascorbyl Phosphate
Sensitive Skin 3/1
Good for sensitive skin
Sodium Ascorbyl Phosphate Tocopheryl Nicotinate Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate
Caution for sensitive skin
Octyldodecanol

Ingredients list

34 total
Lower hazard (1) Higher hazard (3)
All34 Skin Conditioning18 Colorant13 Cosmetic Colorant6 Viscosity Controlling6 Emollient5 Bulking Agent5 Abrasive4 Emulsion Stabilising4
EWG CIR Ingredient Name & Cosmetic Functions Notes
3
A
Cyclopentasiloxane
(Hair Conditioning, Skin Conditioning, Emollient, Solvent)
Silicone
Silicone
1
A
Polyethylene
(Abrasive, Adhesive, Binding Agent, Bulking Agent, Emulsion Stabilising, Film Forming, Oral Care Agentagent, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Polybutene
(Binding Agent, Epilating Agent, Viscosity Increasing Agent)
Euphorbia Cerifera Cera
(Astringent, Emulsion Stabilising, Film Forming, Perfuming, Skin Conditioning, Viscosity Controlling)
1
A
Hydrogenated Jojoba Oil
(Abrasive, Emollient, Skin Conditioning)
1
B
Silica Silylate
(Antifoaming Agent, Bulking Agent, Skin Conditioning, Emollient, Suspending Agent Nonsurfactant, Anticaking Agent, Emulsion Stabilising, Viscosity Controlling)
1
A
Octyldodecanol
(Fragrance, Skin Conditioning, Emollient, Perfuming, Solvent)
CERA MICROCRISTALLINA
(Binding, Emulsion Stabilising, Opacifying, Viscosity Controlling)
1
Sucrose Tetrastearate Triacetate
(Skin Conditioning, Emollient, Emulsifying)
1
A
Theobroma Grandiflorum Seed Butter
(Skin Conditioning)
Fungal Acne
Fungal Acne Trigger
1
A
Sodium Ascorbyl Phosphate
(Antioxidant)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
3
Zinc Gluconate
(Cosmetic Biocide, Skin Conditioning, Deodorant)
1
A
Magnesium Aspartate
(Skin Conditioning)
1
A
Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate
(Antioxidant)
1
A
Tocopheryl Nicotinate
(Antioxidant, Skin Conditioning, Skin Protecting)
1
A
Calcium Sodium Borosilicate
(Bulking Agent)
1
2
A
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling)
2
A
Tin Oxide
(Abrasive, Bulking Agent, Opacifying, Viscosity Controlling)
1
Water
(Solvent)
2
Mica
(Cosmetic Colorant, Opacifying)
1
2
CI 77491
(Colorant, Cosmetic Colorant)
1
CI 77492
(Colorant, Cosmetic Colorant)
2
CI 77499
(Colorant, Cosmetic Colorant)
CI 77510
(Colorant)
CI 77891
(Colorant)
CI 77163
(Colorant)
CI 77289
(Colorant)
CI 77007
(Colorant)
CI 75470
(Colorant, Fragrance)
CI 77742
(Colorant)
3
CI 19140
(Colorant, Cosmetic Colorant)
CI 77288
(Colorant)
2
CI 42090
(Colorant, Cosmetic Colorant)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Exfoliators
Removes dead skin cells to smoothe texture.
Antioxidants
Shields skin from free radical damage.
Vitamin C
Brightens, evens tone, and supports collagen.
Hyaluronic Acid
Hydrates by attracting and holding water.
Zinc
Helps control oil and supports healing.

Benefits

Good For Oily SkinBalances oil and helps reduce shine.
Reduces Large PoresMinimizes the look of enlarged pores.
Redness ReducingSoothes visible redness and calms irritation.
Acne FightingFights acne and helps prevent breakouts.
Anti-AgingSoftens lines and helps skin look youthful.
HydratingBoosts hydration and relieves dry, tight skin.
BrighteningRestores radiance to dull, tired skin.
Scar HealingImproves the look of marks and scars.

Concerns

Contains silicone
Not fungal acne (malassezia) safe

Ingredients explained

Polyethylene
Abrasive, Adhesive
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbrasiveAdhesiveBinding agentBulking agentEmulsion stabilisingFilm formingOral care agentagentViscosity increasing agentViscosity controlling
Polybutene
Binding agent, Epilating agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEpilating agentViscosity increasing agent
Euphorbia Cerifera Cera
Astringent, Emulsion stabilising
Limited public safety data.Read moreShow less
EWG N/A AstringentEmulsion stabilisingFilm formingPerfumingSkin conditioningViscosity controlling
Hydrogenated Jojoba Oil
Abrasive, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbrasiveEmollientSkin conditioning
Silica Silylate
Antifoaming agent, Bulking agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Antifoaming agentBulking agentSkin conditioningEmollientSuspending agent -nonsurfactantAnticaking agentEmulsion stabilisingViscosity controlling
Octyldodecanol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningEmollientPerfumingSolvent
CERA MICROCRISTALLINA
Binding, Emulsion stabilising
Limited public safety data.Read moreShow less
EWG N/A BindingEmulsion stabilisingOpacifyingViscosity controlling
Sucrose Tetrastearate Triacetate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningEmollientEmulsifying
Sodium Ascorbyl Phosphate
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antioxidant
Zinc Gluconate
Cosmetic biocide, Skin conditioning
Low-to-moderate hazard.Read moreShow less
EWG 3 Cosmetic biocideSkin conditioningDeodorant
Magnesium Aspartate
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioning
Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antioxidant
Tocopheryl Nicotinate
Antioxidant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AntioxidantSkin conditioningSkin protecting
Calcium Sodium Borosilicate
Bulking agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Bulking agent
Silica
Abrasive, Absorbent
Low-hazard ingredient.Read moreShow less
EWG 1–2 CIR A AbrasiveAbsorbentAnticaking agentBulking agentOpacifyingViscosity controlling
+ 16 more — see the full ingredients list above
Cyclopentasiloxane
Hair conditioning, Skin conditioning
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Hair conditioningSkin conditioningEmollientSolvent Silicone
Theobroma Grandiflorum Seed Butter
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioning Fungal-acne trigger
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin

How to use

How to use

  • 1 Morning works well: Antioxidants like vitamin C pair well with daytime use under sunscreen.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Vitamin C (ascorbic) 5–20%

L-ascorbic acid is usually used at 5–20% (around 10–15% is common). Above ~20% adds little and tends to irritate more; it also needs a low pH to work.

Sodium Ascorbyl Phosphate

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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