Kiehl's Dermatologist Solutions Nightly Refining Micro-Peel Concentrate

Kiehl's

Kiehl's Dermatologist Solutions Nightly Refining Micro-Peel Concentrate

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About this product

The Kiehl's Dermatologist Solutions Nightly Refining Micro-Peel Concentrate is a serums, essence, ampoule. Our analysis of its 26 ingredients (24 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
Serums, Essence, Ampoules
Ingredients
26
Low-risk
24
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 3/3
Good for dry skin
Saccharum Officinarum (Sugar Cane) Extract Glycerin Hydroxyethyl Urea
Caution for dry skin
Glycerin Sodium Hydroxide Alcohol Denat.
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Alcohol Denat.
Sensitive Skin 5/7
Good for sensitive skin
Ascorbyl Glucoside Glycerin Hydrolyzed Opuntia Ficus-Indica Flower Extract Citrus Limon (Lemon) Fruit Extract Aloe Barbadensis Leaf Juice Powder
Caution for sensitive skin
Sodium Citrate Citrus Aurantium Dulcis (Orange) Fruit Water Glycerin Sodium Benzoate Potassium Sorbate Alcohol Denat. Phenoxyethanol

Ingredients list

26 total
Lower hazard (1) Higher hazard (4)
All26 Skin Conditioning12 Fragrance5 Solvent4 Masking4 Viscosity Controlling4 Preservative3 Buffering Agent3 Humectant3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
4
Alcohol Denat.
(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
Hydroxyethylpiperazine Ethane Sulfonic Acid
(Buffering Agent)
1
Hydroxyethyl Urea
(Hair Conditioning, Humectant, Skin Conditioning)
1
A
Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking)
1
Vaccinium Myrtillus Fruit Extract
(Skin Conditioning)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
1
Chenopodium Quinoa Seed Extract
(Skin Conditioning)
1
Saccharum Officinarum (Sugar Cane) Extract
(Skin Conditioning, Moisturising)
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
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
Phytic Acid
(Chelating Agent, Oral Care Agent)
1
Calcium Carrageenan
(Emulsion Stabilising, Film Forming, Viscosity Increasing Agent, Viscosity Controlling)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
B
Citrus Aurantium Dulcis (Orange) Fruit Water
(Flavoring Agent, Fragrance, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
2
B
Citrus Limon (Lemon) Fruit Extract Good for Oily Skin
Good for Oily Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
Acer Saccharum (Sugar Maple) Extract
(Keratolytic)
1
Hydrolyzed Opuntia Ficus-Indica Flower Extract
(Abrasive, Skin Protecting)
3
A
Potassium Sorbate
(Fragrance, Preservative)
1
3
Aloe Barbadensis Leaf Juice Powder
(Skin Conditioning)
Good for Sensitive Skin
Good for Sensitive Skin
1
Adenosine
(Skin Conditioning)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
B
Citrus Aurantium Dulcis (Orange) Juice
(Skin Conditioning)
Bad for Sensitive Skin
Bad for Sensitive Skin
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
1
Ascorbyl Glucoside
(Antioxidant)

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

Alcohol Denat.
Astringent
Hydroxyethyl Urea
Humectant, Skin Conditioning
Vaccinium Myrtillus Fruit Extract
Skin Conditioning
Chenopodium Quinoa Seed Extract
Skin Conditioning
Saccharum Officinarum (Sugar Cane) Extract
Skin Conditioning, Moisturising
Glycerin
Humectant, Skin Protecting

Benefits

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
Hydroxyethylpiperazine Ethane Sulfonic Acid
Buffering agent
Low-hazard ingredient.Read moreShow less
EWG 1 Buffering agent
Hydroxyethyl Urea
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningHumectantSkin conditioning
Sodium Citrate
Ph adjuster, Buffering agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Ph adjusterBuffering agentChelatingMasking
Vaccinium Myrtillus Fruit Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Sodium Hydroxide
Denaturant, Ph adjuster
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B DenaturantPh adjusterBuffering agent
Chenopodium Quinoa Seed Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Saccharum Officinarum (Sugar Cane) Extract
Skin conditioning, Moisturising
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningMoisturising
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Phytic Acid
Chelating agent, Oral care agent
Low-hazard ingredient.Read moreShow less
EWG 1 Chelating agentOral care agent
Calcium Carrageenan
Emulsion stabilising, Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 Emulsion stabilisingFilm formingViscosity increasing agentViscosity controlling
Disodium EDTA
Chelating agent, Viscosity controlling
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Chelating agentViscosity controlling
Acer Saccharum (Sugar Maple) Extract
Keratolytic
Low-hazard ingredient.Read moreShow less
EWG 1 Keratolytic
Hydrolyzed Opuntia Ficus-Indica Flower Extract
Abrasive, Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 AbrasiveSkin protecting
Potassium Sorbate
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A FragrancePreservative
+ 4 more — see the full ingredients list above
Alcohol Denat.
Antifoaming agent, Antimicrobial
Causes moisture evaporation - prone to dry out skinRead moreShow less
EWG 4 Antifoaming agentAntimicrobialAstringentMaskingSolventViscosity controlling Bad for Dry SkinBad for Sensitive Skin
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
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Citrus Aurantium Dulcis (Orange) Fruit Water
Flavoring agent, Fragrance
Excessively acidic, potentially irritatingRead moreShow less
EWG 1 CIR B Flavoring agentFragranceMasking Bad for Sensitive Skin
Citrus Limon (Lemon) Fruit Extract
Other
Excessively acidic, potentially irritatingRead moreShow less
EWG 2 CIR B Good for Oily SkinBad for Sensitive Skin
Aloe Barbadensis Leaf Juice Powder
Skin conditioning
Low-to-moderate hazard.Read moreShow less
EWG 1–3 Skin conditioning Good for Sensitive Skin
Citrus Aurantium Dulcis (Orange) Juice
Skin conditioning
Excessively acidic, potentially irritatingRead moreShow less
EWG 1 CIR B Skin conditioning 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 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 Glucoside

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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