Serum Facial VC-10

Principia

Where to buy Possibly in stock

About this product

The Principia Serum Facial VC-10 is a emulsion. Our analysis of its 13 ingredients (10 low-risk) rates it Excellent (97/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Emulsion
Ingredients
13
Low-risk
10
Fragrance
Fragrance-free
Origin
Brazil

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 3/1
Good for dry skin
Ethoxydiglycol Caprylyl Glycol Sodium Hyaluronate
Caution for dry skin
Xanthan Gum
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Sodium Ascorbyl Phosphate
Sensitive Skin 2/3
Good for sensitive skin
Sodium Ascorbyl Phosphate Ferulic Acid
Caution for sensitive skin
Ethoxydiglycol Citric Acid Phenoxyethanol

Ingredients list

13 total
Lower hazard (1) Higher hazard (4)
All13 Skin Conditioning8 Solvent3 Humectant3 Fragrance3 Chelating2 Viscosity Decreasing Agent2 Preservative2 Chelating Agent2
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
A
Sodium Ascorbyl Phosphate
(Antioxidant)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
2
Ferulic Acid
(Antioxidant, Preservative, Uv Absorber, Antimicrobial)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Ethoxydiglycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Humectant, Perfuming)
1
A
Sodium Gluconate
(Chelating Agent, Skin Conditioning)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
Sodium Diethylenetriamine Pentamethylene Phosphonate
(Chelating)
Sodium Gluceptate
(Chelating)

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

Xanthan Gum
Skin Conditioning
Sodium Ascorbyl Phosphate
Antioxidant
Ferulic Acid
Antioxidant, Uv Absorber
Ethoxydiglycol
Humectant
Sodium Gluconate
Skin Conditioning
Sodium Hyaluronate
Skin Conditioning, Humectant

Benefits

Fungal-acne (Malassezia) safe
Good for dry skin
Good for oily/acne-prone skin

Concerns

Contains paraben
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Xanthan Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingSkin conditioningSurfactant -emulsifying agentViscosity increasing agentBindingGel formingViscosity controlling
Sodium Ascorbyl Phosphate
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antioxidant
Ferulic Acid
Antioxidant, Preservative
Low-hazard ingredient.Read moreShow less
EWG 2 AntioxidantPreservativeUv absorberAntimicrobial
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Ethoxydiglycol
Fragrance, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSolventViscosity decreasing agentHumectantPerfuming
Sodium Gluconate
Chelating agent, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Chelating agentSkin conditioning
Caprylyl Glycol
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningEmollientHumectant
Sodium Diethylenetriamine Pentamethylene Phosphonate
Chelating
Limited public safety data.Read moreShow less
EWG N/A Chelating
Sodium Gluceptate
Chelating
Limited public safety data.Read moreShow less
EWG N/A Chelating
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben

How to use

How to use

  • 1 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.

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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