Keratin Alpha Sleek Smooth Transformer

L'Oréal Professionnel

Keratin Alpha Sleek Smooth Transformer

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About this product

The L'Oréal Professionnel Keratin Alpha Sleek Smooth Transformer is a misc. Our analysis of its 34 ingredients (26 low-risk) rates it Excellent (96/100). Based on its ingredients, it looks well-suited to 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
Misc
Ingredients
34
Low-risk
26
Fragrance
Contains fragrance
Origin
France
SPF
7 · blocks 85.7% UVB

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 7/7
Good for dry skin
Cetearyl Alcohol Cetyl Esters Isononyl Isononanoate Butylene Glycol Glycerin Dimethicone Sodium Lactate
Caution for dry skin
Glycerin Trideceth-10 Trideceth-3 Polysorbate 20 Polysorbate 60 PEG-100 Stearate Steareth-6
Oily/Acne-Prone Skin No data
Sensitive Skin 4/8
Good for sensitive skin
Cysteine Glycerin Dimethicone Sodium Metabisulfite
Caution for sensitive skin
Disodium Phosphate Cysteine Acetic Acid Butylene Glycol Glycerin Taurine Isopropyl Alcohol Phenoxyethanol

Ingredients list

34 total
Lower hazard (1) Higher hazard (6)
All34 Skin Conditioning12 Fragrance11 Surfactant6 Emulsion Stabilising6 Buffering Agent6 Emulsifying6 Viscosity Controlling5 Hair Conditioning5
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Cetearyl Alcohol
(Emulsion Stabilising, Opacifying, Foam Boosting, Viscosity Increasingagent Aqueous, Viscosity Increasing Agent, Emollient, Emulsifying, Viscosity Controlling)
cocos nucifera oil
(Fragrance, Hair Conditioning, Perfuming, Skin Conditioning)
3
B
Behentrimonium Chloride
(Antistatic Agent, Hair Conditioning, Preservative)
1
B
Isononyl Isononanoate
(Skin Conditioning, Emollient, Antistatic Agent)
1
B
Cetyl Esters
(Skin Conditioning, Emollient)
PARFUM
(Fragrance, Perfuming)
5
6
B
Ethanolamine
(Ph Adjuster, Buffering Agent)
2
A
Isopropyl Alcohol
(Antifoaming Agent, Fragrance, Solvent, Viscosity Decreasing Agent, Perfuming, Viscosity Controlling)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Cysteine
(Antioxidant, Fragrance, Hair Conditioning, Hair Waving/Straighteningagent, Reducing, Antistatic Agent, Hair Waving Or Straightening, Masking)
3
A
Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning)
Silicone
Silicone
1
A
Hydroxyethylcellulose
(Binding Agent, Emulsion Stabilising, Film Forming, Viscosity Increasing Agent, Binding, Stabilising, Viscosity Controlling)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
4
A
Sodium Metabisulfite
(Antioxidant, Preservative, Reducing)
1
A
Amodimethicone
(Antistatic Agent, Hair Conditioning)
Silicone
Silicone
ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning)
1
B
Trideceth-10
(Emulsifying, Surfactant)
1
Trisodium Ethylenediamine Disuccinate
(Chelating Agent)
3
A
PEG-100 Stearate
(Surfactant)
Fungal Acne
Fungal Acne Trigger
Rose Ketone-4
(Perfuming)
Steareth-6
(Emulsifying, Surfactant)
1
Taurine
(Fragrance, Buffering Agent)
1
B
Trideceth-3
(Emulsifying, Surfactant)
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
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
B
Disodium Phosphate
(Buffering Agent, Anticorrosive, Fragrance, Ph Adjuster, Masking)
1
A
Acetic Acid
(Fragrance, Ph Adjuster, Buffering Agent, Masking)
3
B
Polysorbate 60
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
B
Sodium Phosphate
(Buffering Agent)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
3
B
Sodium Lactate
(Buffering Agent, Exfoliant, Humectant, Keratolytic)
3
B
Polysorbate 20
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
A
Palmitoyl Tripeptide-1
(Skin Conditioning)
1
A
Palmitoyl Tetrapeptide-7
(Skin Conditioning)

My Ingredient Notes

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Key ingredients

Antioxidants
Shields skin from free radical damage.
Peptides
Supports skin hydration and improves firmness.
Vitamin C
Brightens, evens tone, and supports collagen.

Benefits

Scar HealingImproves the look of marks and scars.
HydratingBoosts hydration and relieves dry, tight skin.
Anti-AgingSoftens lines and helps skin look youthful.
Skin TextureSmooths rough patches and refines texture.
Barrier RepairStrengthen and restore your skin's natural barrier.
BrighteningRestores radiance to dull, tired skin.
Dark SpotsFades dark spots for even skin tone.
Show all 7 benefits

Concerns

Contains paraben
Contains silicone
Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Cetearyl Alcohol
Emulsion stabilising, Opacifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingOpacifyingFoam boostingViscosity increasingagent - aqueousViscosity increasing agentEmollientEmulsifyingViscosity controlling
cocos nucifera oil
Fragrance, Hair conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceHair conditioningPerfumingSkin conditioning
Behentrimonium Chloride
Antistatic agent, Hair conditioning
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Antistatic agentHair conditioningPreservative
Isononyl Isononanoate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollientAntistatic agent
Cetyl Esters
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollient
PARFUM
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfuming
Cysteine
Antioxidant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AntioxidantFragranceHair conditioningHair-waving/straighteningagentReducingAntistatic agentHair waving or straighteningMasking
Hydroxyethylcellulose
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingFilm formingViscosity increasing agentBindingStabilisingViscosity controlling
Sodium Metabisulfite
Antioxidant, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A AntioxidantPreservativeReducing
ASCORBIC ACID
Antioxidant, Buffering
Limited public safety data.Read moreShow less
EWG N/A AntioxidantBufferingFragranceSkin conditioning
Trideceth-10
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmulsifyingSurfactant
Trisodium Ethylenediamine Disuccinate
Chelating agent
Low-hazard ingredient.Read moreShow less
EWG 1 Chelating agent
Rose Ketone-4
Perfuming
Limited public safety data.Read moreShow less
EWG N/A Perfuming
Steareth-6
Emulsifying, Surfactant
Limited public safety data.Read moreShow less
EWG N/A EmulsifyingSurfactant
+ 9 more — see the full ingredients list above
Ethanolamine
Ph adjuster, Buffering agent
Moderate-hazard ingredient.Read moreShow less
EWG 5–6 CIR B Ph adjusterBuffering agent
Isopropyl Alcohol
Antifoaming agent, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Antifoaming agentFragranceSolventViscosity decreasing agentPerfumingViscosity controlling Bad for Sensitive Skin
Dimethicone
Antifoaming agent, Skin protecting
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Antifoaming agentSkin protectingEmollientSkin conditioning Silicone
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Amodimethicone
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioning Silicone
PEG-100 Stearate
Surfactant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Surfactant Fungal-acne trigger
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
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Polysorbate 60
Emulsifying, Surfactant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B EmulsifyingSurfactant Fungal-acne trigger
Polysorbate 20
Emulsifying, Surfactant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B EmulsifyingSurfactant Fungal-acne trigger

How to use

How to use

  • 1 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.

ASCORBIC 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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