Barrier Solution Serum

Royal Fern

Where to buy Possibly in stock

About this product

The Royal Fern Barrier Solution Serum is a serums, essence, ampoule. Our analysis of its 43 ingredients (30 low-risk) rates it Excellent (99/100). 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
Serums, Essence, Ampoules
Ingredients
43
Low-risk
30
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

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 11/7
Good for dry skin
Dicaprylyl Carbonate Isoamyl Laurate Caprylyl Glycol Sodium PCA Glycerin Cholesterol Fructose Sodium Polyglutamate Sodium Lactate Urea Lecithin
Caution for dry skin
Rosa Canina Fruit Extract Maltodextrin Sodium Lauroyl Lactylate Xanthan Gum Glycerin Potassium Cetyl Phosphate Lecithin
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Rosa Canina Fruit Extract
Sensitive Skin 3/6
Good for sensitive skin
Glycerin Voacanga Africana Seed Extract Hippophae Rhamnoides Fruit Oil
Caution for sensitive skin
Glycine Isoamyl Laurate Glycerin Sodium Benzoate Potassium Sorbate Phenoxyethanol

Ingredients list

43 total
Lower hazard (1) Higher hazard (4)
All43 Skin Conditioning38 Hair Conditioning14 Humectant11 Fragrance8 Emulsion Stabilising7 Emollient5 Solvent4 Antistatic Agent4
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
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
Pentylene Glycol
(Skin Conditioning, Solvent)
1
Methylpropanediol
(Solvent)
1
B
Isoamyl Laurate
(Fragrance, Skin Conditioning, Emollient)
Vegetable Oil
(Hair Conditioning, Skin Conditioning)
1
B
Potassium Cetyl Phosphate
(Emulsifying, Surfactant)
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
Butyrospermum Parkii Butter
(Skin Conditioning, Viscosity Controlling)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
A
Sclerotium Gum
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Viscosity Controlling)
1
Bifida Ferment Lysate
(Skin Conditioning)
3
B
Sodium Lactate
(Buffering Agent, Exfoliant, Humectant, Keratolytic)
1
B
Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
Sodium Polyglutamate
(Hair Conditioning, Skin Conditioning, Humectant)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
Sodium Lauroyl Lactylate
(Emulsifying, Surfactant)
1
Sodium Phytate
(Chelating Agent, Oral Care Agent)
1
Dicaprylyl Carbonate
(Skin Conditioning, Emollient)
cocos nucifera oil
(Fragrance, Hair Conditioning, Perfuming, Skin Conditioning)
1
Ceramide NP
(Hair Conditioning, Skin Conditioning)
Polypodium Leucotomos Root Extract
(Hair Conditioning, Skin Conditioning)
CI 77891
(Colorant)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
Phytosphingosine
(Hair Conditioning, Skin Conditioning)
Ceramide AP
(Hair Conditioning, Skin Conditioning)
2
3
Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient)
1
A
Cholesterol
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Emollient, Emulsifying, Stabilising, Viscosity Controlling)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
A
Fructose
(Flavoring Agent, Humectant)
1
A
Maltodextrin
(Absorbent, Binding Agent, Emulsion Stabilising, Film Forming, Hair Conditioning, Skin Conditioning, Suspending Agent Nonsurfactant, Binding)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
3
A
Urea
(Buffering Agent, Humectant, Antistatic Agent, Skin Conditioning)
1
A
Glycine
(Buffering Agent, Fragrance, Hair Conditioning, Skin Conditioning Agent Miscellaneous, Antistatic Agent, Skin Conditioning)
Malpighia Punicifolia Fruit Extract
(Antioxidant)
A
Hippophae Rhamnoides Fruit Oil
(Skin Protecting)
Osmunda Regalis Leaf Extract
(Antimicrobial, Antioxidant)
3
A
Potassium Sorbate
(Fragrance, Preservative)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
Voacanga Africana Seed Extract
(Skin Protecting)
1
Rosa Canina Fruit Extract
(Astringent, Skin Conditioning, Tonic)
Ceramide EOP
(Hair Conditioning, Skin Conditioning)
1
CI 75810
(Cosmetic Colorant, Deodorant)

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

Glycerin
Humectant, Skin Protecting
Pentylene Glycol
Skin Conditioning
Isoamyl Laurate
Skin Conditioning, Emollient
Vegetable Oil
Skin Conditioning
Caprylyl Glycol
Skin Conditioning, Emollient
Butyrospermum Parkii Butter
Skin Conditioning

Benefits

Good for dry skin
Good for oily/acne-prone 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
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
Methylpropanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Isoamyl Laurate
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B FragranceSkin conditioningEmollient
Vegetable Oil
Hair conditioning, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningSkin conditioning
Potassium Cetyl Phosphate
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmulsifyingSurfactant
Caprylyl Glycol
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningEmollientHumectant
Butyrospermum Parkii Butter
Skin conditioning, Viscosity controlling
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningViscosity 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
Sclerotium Gum
Emulsion stabilising, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingSkin conditioningViscosity increasing agentViscosity controlling
Bifida Ferment Lysate
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Sodium Lactate
Buffering agent, Exfoliant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Buffering agentExfoliantHumectantKeratolytic
Sodium Polyglutamate
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioningHumectant
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Sodium Lauroyl Lactylate
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 EmulsifyingSurfactant
+ 25 more — see the full ingredients list above
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
Sodium PCA
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningHumectantAntistatic agentSkin conditioning 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 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning & evening: Suitable for both AM and PM use.

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.

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

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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