Signature Estud Protector 5.2

Demar3

Where to buy Possibly in stock

About this product

The Demar3 Signature Estud Protector 5.2 is a serums, essence, ampoule. Our analysis of its 56 ingredients (48 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to oily / acne-prone skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
56
Low-risk
48
Fragrance
Contains fragrance
Origin
South Korea
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 9/12
Good for dry skin
Glycereth-26 Ophiopogon Japonicus Root Extract Betaine Caprylyl Glycol Sodium Hyaluronate Glycerin Propylene Glycol Trehalose Scutellaria Baicalensis Root Extract
Caution for dry skin
Maltodextrin Centella Asiatica Extract Alchemilla Vulgaris Extract Glycerin Polyglyceryl-10 Laurate Volcanic Ash Scutellaria Baicalensis Root Extract Alcohol Hydrogenated Lecithin Achillea Millefolium Extract Sodium Hydroxide Vaccinium Vitis-Idaea Leaf Extract
Oily/Acne-Prone Skin 4/0
Good for oily/acne-prone skin
Alchemilla Vulgaris Extract Scutellaria Baicalensis Root Extract Alcohol Vaccinium Vitis-Idaea Leaf Extract
Sensitive Skin 6/13
Good for sensitive skin
Centella Asiatica Extract Rhododendron Ferrugineum Extract Sambucus Nigra Flower Extract Glycerin Scutellaria Baicalensis Root Extract Achillea Millefolium Extract
Caution for sensitive skin
Cellulose Gum Rhododendron Ferrugineum Extract Caramel Glycerin Propylene Glycol Citric Acid Alcohol Tromethamine Achillea Millefolium Extract Sodium Benzoate Acacia Senegal Gum Potassium Sorbate Cinnamomum Cassia Bark Extract

Ingredients list

56 total
Lower hazard (1) Higher hazard (3)
All56 Skin Conditioning42 Humectant13 Fragrance11 Hair Conditioning10 Masking10 Solvent8 Viscosity Controlling8 Tonic6
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
B
Centella Asiatica Extract
(Cleansing, Skin Conditioning, Smoothing, Soothing, Tonic)
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
Methylpropanediol
(Solvent)
1
Glycereth-26
(Humectant, Viscosity Decreasing Agent, Solvent, Viscosity Controlling)
1
Water
(Solvent)
1
A
1,2-Hexanediol
(Solvent)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
2
Alcohol
(Antifoaming Agent, Antimicrobial, Astringent, Masking, Solvent, Viscosity Controlling)
Bad for Dry Skin
Bad for Dry Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
B
Betaine
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning, Viscosity Controlling)
1
A
Trehalose
(Flavoring Agent, Humectant, Moisturising)
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
Ceramide NP
(Hair Conditioning, Skin Conditioning)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
Ficus Carica Fruit Extract
(Humectant)
1
Lactobacillus/Soybean Ferment Extract
(Skin Conditioning)
1
Leontopodium Alpinum Extract
(Skin Conditioning)
1
Scutellaria Baicalensis Root Extract
(Astringent, Humectant, Soothing)
Chamaecyparis Obtusa Leaf Extract
(Skin Conditioning)
1
Phytosphingosine
(Hair Conditioning, Skin Conditioning)
1
Origanum Vulgare Leaf Extract
(Skin Conditioning)
1
Veronica Officinalis Extract
(Skin Conditioning)
MALVA SYLVESTRIS EXTRACT
(Astringent, Skin Conditioning, Skin Conditioning Emollient, Smoothing, Soothing)
1
Melissa Officinalis Leaf Extract
(Skin Conditioning)
1
Adenosine
(Skin Conditioning)
1
Alchemilla Vulgaris Extract
(Astringent, Skin Conditioning)
salix alba bark extract
(Astringent, Hair Conditioning, Skin Conditioning, Soothing, Tonic)
Cinnamomum Cassia Bark Extract
(Hair Conditioning, Masking, Oral Care Agent)
1
Sambucus Nigra Flower Extract
(Refreshing, Skin Conditioning, Soothing, Tonic)
1
Portulaca Oleracea Extract
(Skin Conditioning)
1
Ophiopogon Japonicus Root Extract
(Humectant, Skin Conditioning, Tonic)
3
B
Achillea Millefolium Extract
(Antidandruff Agent, Cleansing, Masking, Refreshing, Skin Conditioning, Soothing, Tonic)
1
Rhododendron Ferrugineum Extract
(Fragrance, Masking, Skin Protecting)
Mentha Piperita Leaf Extract
(Skin Conditioning)
1
Primula Veris Extract
(Skin Conditioning)
2
A
Hydrogenated Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Suspending Agent Nonsurfactant)
1
B
Polyglyceryl-10 Laurate
(Skin Conditioning, Emulsifying, Surfactant)
1
Ascophyllum Nodosum Extract
(Skin Conditioning)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
2
A
Tromethamine
(Fragrance, Ph Adjuster, Buffering Agent, Masking)
1
A
Cellulose Gum
(Binding Agent, Emulsion Stabilising, Film Forming, Fragrance, Viscosity Increasing Agent, Binding, Masking, Viscosity Controlling)
1
Glyceryl Polymethacrylate
(Film Forming, Viscosity Controlling)
Vaccinium Vitis-Idaea Leaf Extract
(Astringent, Skin Conditioning, Tonic)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
Caramel
(Colorant, Fragrance, Cosmetic Colorant, Masking)
3
B
Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
3
A
Acacia Senegal Gum
(Adhesive, Fragrance, Film Forming, Masking)
1
A
Maltodextrin
(Absorbent, Binding Agent, Emulsion Stabilising, Film Forming, Hair Conditioning, Skin Conditioning, Suspending Agent Nonsurfactant, Binding)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Volcanic Ash
(Abrasive, Absorbent, Bulking Agent)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
PARFUM
(Fragrance, Perfuming)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
3
A
Potassium Sorbate
(Fragrance, Preservative)

My Ingredient Notes

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Key ingredients

Niacinamide
Strengthens, smooths, and brightens skin.
Ceramides
Locks in moisture and supports skin barrier.
Hyaluronic Acid
Hydrates by attracting and holding water.
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.
Reduces IrritationEases discomfort and supports skin resilience.
Redness ReducingSoothes visible redness and calms irritation.
Anti-AgingSoftens lines and helps skin look youthful.
Scar HealingImproves the look of marks and scars.
Good For Oily SkinBalances oil and helps reduce shine.
Dark SpotsFades dark spots for even skin tone.

Concerns

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

Ingredients explained

Centella Asiatica Extract
Cleansing, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingSkin conditioningSmoothingSoothingTonic
Methylpropanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Glycereth-26
Humectant, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantViscosity decreasing agentSolventViscosity controlling
Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Betaine
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningHumectantAntistatic agentSkin conditioningViscosity controlling
Trehalose
Flavoring agent, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Flavoring agentHumectantMoisturising
Ceramide NP
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioning
Ficus Carica Fruit Extract
Humectant
Limited public safety data.Read moreShow less
EWG N/A Humectant
Lactobacillus/Soybean Ferment Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Leontopodium Alpinum Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Scutellaria Baicalensis Root Extract
Astringent, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 AstringentHumectantSoothing
Chamaecyparis Obtusa Leaf Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Phytosphingosine
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioning
+ 35 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
Alcohol
Antifoaming agent, Antimicrobial
Causes moisture evaporation - prone to dry out skinRead moreShow less
EWG 2 Antifoaming agentAntimicrobialAstringentMaskingSolventViscosity controlling Bad for Dry SkinBad for Sensitive Skin
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Propylene Glycol
Fragrance, Humectant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B FragranceHumectantSkin-conditioningagent - miscellaneousSolventViscosity decreasing agentSkin conditioningViscosity controlling Good for Dry Skin
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

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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