Vitamin C Serum

Measureable Difference

Where to buy Possibly in stock

About this product

The Measureable Difference Vitamin C Serum is a emulsion. Our analysis of its 11 ingredients (4 low-risk) rates it Excellent (96/100). Based on its ingredients, it looks well-suited to dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Emulsion
Ingredients
11
Low-risk
4
Fragrance
Fragrance-free
Origin
United States

The evidence

Quick Product Notes

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

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 2/1
Good for dry skin
Butylene Glycol Sodium Hyaluronate
Caution for dry skin
Polysorbate 20
Oily/Acne-Prone Skin No data
Sensitive Skin 1/2
Good for sensitive skin
Aloe Barbadensis Leaf Juice
Caution for sensitive skin
Butylene Glycol Phenoxyethanol

Ingredients list

11 total
Lower hazard (1) Higher hazard (4)
All11 Skin Conditioning9 Fragrance5 Solvent2 Humectant2 Antioxidant2 Perfuming2 Viscositydecreasing Agent1 Masking1
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
3
B
Polysorbate 20
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
B
Aloe Barbadensis Leaf Juice
(Skin Conditioning)
Good for Sensitive Skin
Good for Sensitive Skin
ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
Citrus Sinensis Peel Extract
(Perfuming)
Citrus Reticulata Peel Extract
(Skin Conditioning)
Citrus Aurantifolia Oil
(Cleansing, Fragrance, Hair Conditioning, Perfuming, Skin Conditioning, Tonic)

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

Butylene Glycol
Skin Conditioning, Humectant
Sodium Hyaluronate
Skin Conditioning, Humectant
Aloe Barbadensis Leaf Juice
Skin Conditioning
ASCORBIC ACID
Antioxidant, Skin Conditioning
TOCOPHEROL
Antioxidant, Skin Conditioning
Citrus Reticulata Peel Extract
Skin Conditioning

Benefits

Good for dry skin

Concerns

Contains paraben
Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
ASCORBIC ACID
Antioxidant, Buffering
Limited public safety data.Read moreShow less
EWG N/A AntioxidantBufferingFragranceSkin conditioning
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Citrus Sinensis Peel Extract
Perfuming
Limited public safety data.Read moreShow less
EWG N/A Perfuming
Citrus Reticulata Peel Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Citrus Aurantifolia Oil
Cleansing, Fragrance
Limited public safety data.Read moreShow less
EWG N/A CleansingFragranceHair conditioningPerfumingSkin conditioningTonic
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Polysorbate 20
Emulsifying, Surfactant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B EmulsifyingSurfactant Fungal-acne trigger
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Aloe Barbadensis Leaf Juice
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A CIR B Skin conditioning Good for Sensitive 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.

ASCORBIC ACID

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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