Jan Marini Skin Research, Inc. C-ESTA Serum

Jan Marini Skin Research, Inc.

Where to buy Possibly in stock

About this product

The Jan Marini Skin Research, Inc. C-ESTA Serum is a serums, essence, ampoule. Our analysis of its 25 ingredients (14 low-risk) rates it Great (74/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry 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
25
Low-risk
14
Fragrance
Contains fragrance
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 5/3
Good for dry skin
Butylene Glycol Dicaprylate/Dicaprate Sodium Hyaluronate Pantethine Dimethicone Urea
Caution for dry skin
Xanthan Gum Sodium Hydroxide Zinc Sulfate
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Zinc Sulfate
Sensitive Skin 6/9
Good for sensitive skin
Ascorbyl Palmitate Ergothioneine Dimethicone Tocopheryl Acetate Sodium Metabisulfite Farnesol
Caution for sensitive skin
Ascorbyl Palmitate Methylparaben Ethylparaben Farnesol Phenoxyethanol Linalool Butylparaben Propylparaben Fragrance

Ingredients list

25 total
Lower hazard (1) Higher hazard (8)
All25 Skin Conditioning13 Fragrance7 Preservative6 Masking5 Antioxidant4 Humectant3 Buffering Agent3 Emollient3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
A
Ascorbyl Palmitate
(Antioxidant, Masking)
Fungal Acne
Fungal Acne Trigger
3
A
Urea
(Buffering Agent, Humectant, Antistatic Agent, Skin Conditioning)
1
Butylene Glycol Dicaprylate/Dicaprate
(Emollient, Skin Conditioning)
3
A
Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning)
Silicone
Silicone
1
Acetyl Tyrosine
(Skin Conditioning, Tanning)
4
Dimethyl MEA
(Ph Adjuster, Buffering Agent)
8
Fragrance
(Deodorant, Masking, Perfuming)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
1
Pantethine
(Emollient, Hair Conditioning)
4
Zinc Sulfate
(Cosmetic Astringent, Cosmetic Biocide, Oral Care Agent, Antimicrobial, Antiplaque)
1
Ergothioneine
(Antioxidant)
1
Pyridoxine HCl
(Hair Conditioning, Skin Conditioning, Antistatic Agent)
4
A
Sodium Metabisulfite
(Antioxidant, Preservative, Reducing)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
4
Farnesol
(Fragrance, Deodorant, Masking, Solvent, Soothing)
Allergens
Allergens
5
Linalool
(Fragrance, Deodorant, Masking)
Allergens
Allergens
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
4
A
Methylparaben
(Fragrance, Preservative)
Paraben
Paraben
7
A
Butylparaben
(Fragrance, Preservative, Masking)
Paraben
Paraben
4
A
Ethylparaben
(Fragrance, Preservative)
Paraben
Paraben
7
A
Propylparaben
(Fragrance, Preservative, Perfuming)
Paraben
Paraben

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

Sodium Hyaluronate
Skin Conditioning, Humectant
Ascorbyl Palmitate
Antioxidant
Urea
Humectant, Skin Conditioning
Butylene Glycol Dicaprylate/Dicaprate
Emollient, Skin Conditioning
Dimethicone
Skin Protecting, Emollient
Acetyl Tyrosine
Skin Conditioning

Benefits

Good for dry skin
Good for oily/acne-prone skin

Concerns

Contains paraben
Contains silicone
Contains eu allergen
Not fungal acne (malassezia) safe
Fragrance — higher EWG
Butylparaben — higher EWG
Propylparaben — 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
Urea
Buffering agent, Humectant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Buffering agentHumectantAntistatic agentSkin conditioning
Butylene Glycol Dicaprylate/Dicaprate
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 EmollientSkin conditioning
Acetyl Tyrosine
Skin conditioning, Tanning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningTanning
Dimethyl MEA
Ph adjuster, Buffering agent
Low-to-moderate hazard.Read moreShow less
EWG 4 Ph adjusterBuffering agent
Sodium Hydroxide
Denaturant, Ph adjuster
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B DenaturantPh adjusterBuffering agent
Pantethine
Emollient, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 EmollientHair conditioning
Zinc Sulfate
Cosmetic astringent, Cosmetic biocide
Low-to-moderate hazard.Read moreShow less
EWG 4 Cosmetic astringentCosmetic biocideOral care agentAntimicrobialAntiplaque
Ergothioneine
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 Antioxidant
Pyridoxine HCl
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioningAntistatic agent
Sodium Metabisulfite
Antioxidant, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A AntioxidantPreservativeReducing
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
Disodium EDTA
Chelating agent, Viscosity controlling
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Chelating agentViscosity controlling
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Ascorbyl Palmitate
Antioxidant, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AntioxidantMasking Fungal-acne trigger
Dimethicone
Antifoaming agent, Skin protecting
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Antifoaming agentSkin protectingEmollientSkin conditioning Silicone
Fragrance
Deodorant, Masking
Higher-hazard ingredient.Read moreShow less
EWG 8 DeodorantMaskingPerfuming
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin
Farnesol
Fragrance, Deodorant
Low-to-moderate hazard.Read moreShow less
EWG 4 FragranceDeodorantMaskingSolventSoothing Allergens
Linalool
Fragrance, Deodorant
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceDeodorantMasking Allergens
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Methylparaben
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Butylparaben
Fragrance, Preservative
Higher-hazard ingredient.Read moreShow less
EWG 7 CIR A FragrancePreservativeMasking Paraben
Ethylparaben
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Propylparaben
Fragrance, Preservative
Higher-hazard ingredient.Read moreShow less
EWG 7 CIR A FragrancePreservativePerfuming Paraben

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 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.

Ascorbyl Palmitate

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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