Serum Facial AL-10

Principia

Where to buy Possibly in stock

About this product

The Principia Serum Facial AL-10 is a emulsion. Our analysis of its 12 ingredients (7 low-risk) rates it Excellent (84/100). 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
12
Low-risk
7
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 3/2
Good for dry skin
Ethoxydiglycol Caprylyl Glycol Lactic Acid
Caution for dry skin
Xanthan Gum Sodium Hydroxide
Oily/Acne-Prone Skin No data
Sensitive Skin 1/4
Good for sensitive skin
Kojic Acid
Caution for sensitive skin
Kojic Acid Ethoxydiglycol Lactic Acid Phenoxyethanol

Ingredients list

12 total
Lower hazard (1) Higher hazard (7)
All12 Skin Conditioning6 Humectant3 Fragrance3 Viscosity Controlling3 Solvent3 Emulsion Stabilising2 Chelating2 Viscosity Decreasing Agent2
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Ethoxydiglycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Humectant, Perfuming)
6
7
B
Kojic Acid
(Antioxidant)
Good for Dry Skin
Good for Dry Skin
4
B
Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent)
Bad for Sensitive Skin
Bad for Sensitive Skin
Sodium Diethylenetriamine Pentamethylene Phosphonate
(Chelating)
Sodium Gluceptate
(Chelating)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)

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
Ethoxydiglycol
Humectant
Kojic Acid
Antioxidant
Lactic Acid
Exfoliant, Humectant
Caprylyl Glycol
Skin Conditioning, Emollient

Benefits

Fungal-acne (Malassezia) safe
Good for dry skin

Concerns

Contains paraben
Kojic Acid — higher EWG
May not suit sensitive skin

EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Disodium EDTA
Chelating agent, Viscosity controlling
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Chelating agentViscosity controlling
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
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 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
Caprylyl Glycol
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningEmollientHumectant
Sodium Hydroxide
Denaturant, Ph adjuster
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B DenaturantPh adjusterBuffering agent
Kojic Acid
Antioxidant
Higher-hazard ingredient.Read moreShow less
EWG 6–7 CIR B Antioxidant Good for Dry Skin
Lactic Acid
Exfoliant, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B ExfoliantFragranceHumectantPh adjusterSkin-conditioning agent -humectantSkin conditioningBuffering agent Bad for Sensitive Skin
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben

How to use

How to use

  • 1 Evening, start slow: Best in the PM a few times a week to begin with; avoid layering with other strong actives the same night.
  • 2 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

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.

AHA (acid exfoliant) 5–10% (OTC)

OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.

Lactic 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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