O2 Vitamin C Brighten Defend Serum

Element Eight

Where to buy Possibly in stock

About this product

The Element Eight O2 Vitamin C Brighten Defend Serum is a serums, essence, ampoule. Our analysis of its 43 ingredients (35 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to oily / acne-prone skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
43
Low-risk
35
Fragrance
Fragrance-free
Origin
United States
Data updated
May 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 8/13
Good for dry skin
Glyceryl Stearate Mannitol Cetearyl Alcohol Cetyl Alcohol Inulin Butylene Glycol Glycerin Lecithin
Caution for dry skin
Decyl Glucoside Maltodextrin Punica Granatum Extract Cetyl Alcohol Sodium Olivate Xanthan Gum Glycerin Phosphatidylcholine Sodium Oleate Hydrogenated Lecithin Sodium Hydroxide Silica Lecithin
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Punica Granatum Extract
Sensitive Skin 4/10
Good for sensitive skin
Glycerin Tetrahexyldecyl Ascorbate Ferulic Acid Tocopheryl Acetate
Caution for sensitive skin
Dipropylene Glycol Mannitol Punica Granatum Extract Cetyl Alcohol Sodium Chloride Butylene Glycol Glycerin Sodium Benzoate Potassium Sorbate Benzyl Alcohol

Ingredients list

43 total
Lower hazard (1) Higher hazard (5)
All43 Skin Conditioning28 Emulsion Stabilising13 Viscosity Controlling12 Fragrance9 Viscosity Increasing Agent8 Emulsifying8 Masking8 Surfactant7
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
Tetrahexyldecyl Ascorbate
(Antioxidant, Skin Conditioning)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
A
Glyceryl Stearate
(Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
A
Cetearyl Alcohol
(Emulsion Stabilising, Opacifying, Foam Boosting, Viscosity Increasingagent Aqueous, Viscosity Increasing Agent, Emollient, Emulsifying, Viscosity Controlling)
1
Sodium Olivate
(Sufactant, Emulsifying, Surfactant, Viscosity Increasing Agent, Viscosity Controlling)
1
Oxygen
(Skin Conditioning)
2
Ferulic Acid
(Antioxidant, Preservative, Uv Absorber, Antimicrobial)
Bisabolol
(Fragrance, Skin Conditioning, Soothing)
Oligopeptide-68
(Bleaching)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
Angelica Acutiloba Root Extract
(Skin Conditioning)
oenothera biennis oil
(Skin Conditioning Emollient)
Rosa Canina Seed Oil
(Skin Conditioning Emollient)
1
Punica Granatum Extract
(Astringent, Masking, Tonic)
VITIS VINIFERA SEED OIL
(Skin Conditioning, Skin Conditioning Emollient)
1
A
Maltodextrin
(Absorbent, Binding Agent, Emulsion Stabilising, Film Forming, Hair Conditioning, Skin Conditioning, Suspending Agent Nonsurfactant, Binding)
5
A
Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking)
Allergens
Allergens
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
A
Inulin
(Humectant, Skin Conditioning)
1
A
Dipropylene Glycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Masking, Viscosity Controlling)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
Tetrasodium Iminodisuccinate
(Chelating Agent)
1
Mannitol
(Binding Agent, Flavoring Agent, Humectant, Binding, Masking, Moisturising, Skin Conditioning)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
A
Sclerotium Gum
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Viscosity Controlling)
2
3
Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient)
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
1
A
Phosphatidylcholine
(Skin Conditioning, Emulsifying, Surfactant)
Glycine Soja Oil
(Perfuming, Skin Conditioning, Skin Conditioning Emollient)
2
A
Hydrogenated Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Suspending Agent Nonsurfactant)
2
Sodium Oleate
(Sufactant, Emulsifying, Surfactant, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Pullulan
(Binding Agent, Film Forming, Binding)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
1
2
A
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling)
1
A
Cetyl Alcohol
(Emulsion Stabilising, Fragrance, Opacifying, Emulsifying, Surfactant, Foam Boosting, Viscosity Increasing Agent, Emollient, Masking, Viscosity Controlling)
3
A
Potassium Sorbate
(Fragrance, Preservative)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
1
B
Decyl Glucoside
(Cleansing, Emulsion Stabilising, Surfactant)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
Sodium Chloride
(Bulking Agent, Masking, Oral Care Agent, Viscosity Controlling)

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

Antioxidants
Shields skin from free radical damage.
Vitamin E
Protects skin and soothes irritation.
Vitamin C
Brightens, evens tone, and supports collagen.
Peptides
Supports skin hydration and improves firmness.
Exfoliators
Removes dead skin cells to smoothe texture.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Barrier RepairStrengthen and restore your skin's natural barrier.
Redness ReducingSoothes visible redness and calms irritation.
BrighteningRestores radiance to dull, tired skin.
Scar HealingImproves the look of marks and scars.
Reduces IrritationEases discomfort and supports skin resilience.
Anti-AgingSoftens lines and helps skin look youthful.
Reduces Large PoresMinimizes the look of enlarged pores.

Concerns

Contains eu allergen
Not fungal acne (malassezia) safe
May not suit dry skin
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Tetrahexyldecyl Ascorbate
Antioxidant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantSkin conditioning
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
Cetearyl Alcohol
Emulsion stabilising, Opacifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingOpacifyingFoam boostingViscosity increasingagent - aqueousViscosity increasing agentEmollientEmulsifyingViscosity controlling
Sodium Olivate
Sufactant, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 SufactantEmulsifyingSurfactantViscosity increasing agentViscosity controlling
Oxygen
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Ferulic Acid
Antioxidant, Preservative
Low-hazard ingredient.Read moreShow less
EWG 2 AntioxidantPreservativeUv absorberAntimicrobial
Bisabolol
Fragrance, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceSkin conditioningSoothing
Oligopeptide-68
Bleaching
Limited public safety data.Read moreShow less
EWG N/A Bleaching
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Angelica Acutiloba Root Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
oenothera biennis oil
Skin conditioning emollient
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning emollient
Rosa Canina Seed Oil
Skin conditioning emollient
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning emollient
Punica Granatum Extract
Astringent, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 AstringentMaskingTonic
VITIS VINIFERA SEED OIL
Skin conditioning, Skin conditioning emollient
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningSkin conditioning emollient
+ 23 more — see the full ingredients list above
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Glyceryl Stearate
Emollient, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientEmulsifying Fungal-acne trigger
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Benzyl Alcohol
External analgesic, Fragrance
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR A External analgesicFragranceOral health care drugPreservativeSolventViscosity decreasing agentMasking Allergens
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.

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.

Tetrahexyldecyl Ascorbate

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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