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Kérastase Resistance Heat Protecting Leave In Treatment for Damaged Hair

Kérastase Resistance Heat Protecting Leave In Treatment for Damaged Hair Ingredients Explained

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Updated October 25, 2023

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Overview

What it is

Heat protectant with 31 ingredients

Cool Features

It is fungal acne (malassezia) safe

Suited For

It has ingredients that are good for dry skin and brightening skin

Free From

It doesn't contain any harsh alcohols or oils

Fun facts

Kérastase is from France. This product is used in 3 routines created by our community.

We independently verify ingredients and our claims are backed by peer-reviewed research. Does this product need an update? Let us know.

Quick info

Free from

Safety & Ethics

French Brand

Brand country of origin

Ingredients, at a glance

What's in this product, and how it might affect your skin.

Benefits

Concerns

Ingredients List

Dive into the full list of ingredients.

Water Skin Conditioning, Solvent

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

Loved by users
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Cyclopentasiloxane Emollient, Skin Conditioning, Solvent
Silicon Icon

Cyclopentasiloxane is a silicone used to improve texture and trap moisture. An easier name for this is D5.

Disliked by users
SiliconSilicon Icon
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Propylene Glycol Humectant, Skin Conditioning, Solvent
0 / 0 May worsen Eczema Icon

Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.

0 Com. / 0 Irr.
Very disliked
May worsen EczemaMay worsen Eczema Icon
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Dimethiconol Emollient, Moisturising

Dimethiconol is a silicone that resembles the popular dimethicone. Like other silicones, it is an emollient. Emollients create a thin film on skin to prevent moisture from escaping.

Disliked by users
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Triethanolamine Buffering, Emulsifying, Masking
2 / 0

Triethanolamine is an emulsifier and pH adjuster. It is created using ethylene oxide and ammonia. This gives Triethanolamine a nitrogen core and a similar scent to ammonia.

2 Com. / 0 Irr.
Very disliked
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Phenoxyethanol Preservative
Preservative Icon

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.

Very disliked
PreservativePreservative Icon
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Peg/Ppg-17/18 Dimethicone Emulsifying
Silicon Icon

Peg/Ppg-17/18 Dimethicone is a type of silicone.

Not enough ratings
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Carbomer Emulsion Stabilising, Gel Forming
1 / 0

Carbomer is a polymer of acrylic acid. Its main role is to create gel consistency within products.

1 Com. / 0 Irr.
Disliked by users
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Behentrimonium Chloride Preservative
Preservative Icon

This ingredient is a preservative and often used for it's anti-static properties. You'll most likely see this ingredient in hair conditioners.

Liked by users
PreservativePreservative Icon
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Polyquaternium-4

We don't have a description for Polyquaternium-4 yet.

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Potato Starch Modified

We don't have a description for Potato Starch Modified yet.

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Hydroxypropyl Guar Emulsion Stabilising

We don't have a description for Hydroxypropyl Guar yet.

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Methylparaben Preservative
0 / 0 Preservative IconParaben IconNon-Reef-Safe IconMay worsen Eczema Icon

Methylparaben is a preservative and is a paraben. It is used to prevent the growth of fungus, mold, and other harmful bacteria. Parabens are chemicals used as preservatives in both cosmetics and food.

0 Com. / 0 Irr.
Very disliked
PreservativePreservative IconParabenParaben Icon2 Concerns
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Limonene Perfuming, Solvent
Fragrance Icon

Limonene is a fragrance that adds scent and taste to a formulation.

Very disliked
FragranceFragrance Icon
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Amodimethicone
Silicon Icon

Amodimethicone is a type of silicone.

Disliked by users
SiliconSilicon Icon
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Cetyl Alcohol Emollient, Emulsifying, Emulsion Stabilising
2 / 2 Fatty Alcohol Icon

Cetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product.

2 Com. / 2 Irr.
Very disliked
Fatty AlcoholFatty Alcohol Icon
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Quaternium-87 Cleansing

We don't have a description for Quaternium-87 yet.

Not enough ratings
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Behentrimonium Methosulfate
Sulfate Icon

Behentrimonium Methosulfate is an ammonium salt. It is mainly used to prevent static in haircare products as a surfactant.

Disliked by users
SulfateSulfate Icon
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Quaternium-33

We don't have a description for Quaternium-33 yet.

Not enough ratings
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Trideceth-6 Emulsifying

We don't have a description for Trideceth-6 yet.

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2-Oleamido-1,3-Octadecanediol Skin Conditioning

We don't have a description for 2-Oleamido-1,3-Octadecanediol yet.

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Geraniol Perfuming, Tonic
Fragrance IconEU Allergen Icon

Geraniol is used to add fragrance/parfum to a product. It is the main component of citronellol. It is a monoterpenoid and an alcohol.

Very disliked
FragranceFragrance IconEU AllergenEU Allergen Icon
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Linalool Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.

Very disliked
FragranceFragrance Icon2 Concerns
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Glycerin Humectant, Skin Conditioning, Skin Protecting
0 / 0 Helps hydrate Dry Skin IconHelps brighten skin Icon

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

0 Com. / 0 Irr.
Loved by users
2 Benefits
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Citronellol Perfuming
Fragrance IconEU Allergen Icon

Citronellol is used to add fragrance/parfum to a product. It is often derived from plants such as roses. In fact, it can be found in many essential oils including geranium, lavender, neroli, and more. The scent of Citronellol is often described as "fresh, grassy, and citrus-like".

Very disliked
FragranceFragrance IconEU AllergenEU Allergen Icon
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Citral Perfuming
Fragrance IconEU Allergen Icon

Citral is a fragrance and used to add a lemon-like scent to products. It is both naturally found in plants and created synthetically. In plants, it is commonly occurring in lemon myrtle, lemongrass, lemon tea-tree, lemon verbena, and other citruses.

Not enough ratings
FragranceFragrance IconEU AllergenEU Allergen Icon
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Cetrimonium Chloride Antimicrobial, Emulsifying, Preservative
Preservative Icon

This ingredient is a preservative, antimicrobial, and emulsifier. It is often used in cosmetics for its ability to cleanse, condition, and reduce static.

Mixed reviews
PreservativePreservative Icon
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Trehalose Humectant, Moisturising

Trehalose is a disaccharide made of two glucose molecules (glucose is sugar!). Trehalose is used to help moisturize skin. It also has antioxidant properties.

Loved by users
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Tamarindus Indica Seed Polysaccharide Skin Conditioning

We don't have a description for Tamarindus Indica Seed Polysaccharide yet.

Not enough ratings
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Myrothamnus Flabellifolia Leaf Extract Emollient

We don't have a description for Myrothamnus Flabellifolia Leaf Extract yet.

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Parfum Masking, Perfuming
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.

Very disliked
FragranceFragrance Icon2 Concerns
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What the community thinks

Based on the number of likes and dislikes each ingredient has received.

10
10
10
liked
mixed
disliked
not rated
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Ingredients Explained

This product contains 31 ingredients. Click on any ingredient to learn more about it
Skin Conditioning, Solvent
Loved

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!

Learn more about Water
Emollient, Skin Conditioning, Solvent
Disliked

Cyclopentasiloxane is a silicone used to improve texture and trap moisture. An easier name for this is D5.

D5 is considered lightweight and volatile. Volatile means it evaporates quickly after application. Once evaporated, D5 leaves a thin barrier that helps keep skin hydrated.

D5 is an emollient. Emollients help soften the skin and prevent water loss. Silicones create a silky texture in products. D5 helps other ingredients become more spreadable.

Studies show D5 is safe to use in skincare products. We recommend speaking with a skincare professional if you have concerns.

Learn more about Cyclopentasiloxane
Humectant, Skin Conditioning, Solvent
Very Disliked

Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.

Another role of this ingredient is preventing a product from melting or freezing. Propylene glycol also adds antimicrobrial properties to a product, elongating product lifespan.

This ingredient is considered an organic alcohol and commonly added into both cosmetics and foods.

Those with sensitive skin or conditions may deliver a rash when using this ingredient.

Learn more about Propylene Glycol
Emollient, Moisturising
Disliked

Dimethiconol is a silicone that resembles the popular dimethicone. Like other silicones, it is an emollient. Emollients create a thin film on skin to prevent moisture from escaping.

This ingredient helps to create a silky texture and improve spreadability. Due to its high molecular weight and thickness, it is often combined with cyclopentasiloxane.

Buffering, Emulsifying, Masking
Very Disliked

Triethanolamine is an emulsifier and pH adjuster. It is created using ethylene oxide and ammonia. This gives Triethanolamine a nitrogen core and a similar scent to ammonia.

As an emulsifier, it prevents ingredients from separating and enhances texture by adding volume to a product.

PH adjusters are common in cosmetic products. The pH of a product can affect the effectiveness of other ingredients. A product with a high pH may also irritate the skin.

Learn more about Triethanolamine
Preservative
Very Disliked

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.

It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.

Peg/Ppg-17/18 Dimethicone is a type of silicone.

Emulsion Stabilising, Gel Forming
Disliked

Carbomer is a polymer of acrylic acid. Its main role is to create gel consistency within products.

Carbomer is commonly found in many types of cosmetics products. It is found to be safe in concentrations up to 15%. However, a high amount of carbomer can cause pilling or balling up of products. Most products contain 1% of less of carbomer.

Preservative
Liked

This ingredient is a preservative and often used for it's anti-static properties. You'll most likely see this ingredient in hair conditioners.

It does not cause irritation or sensitization in leave-on products at 1-5%.

We don't have a description for Polyquaternium-4 yet.

We don't have a description for Potato Starch Modified yet.

Emulsion Stabilising

We don't have a description for Hydroxypropyl Guar yet.

Preservative
Very Disliked

Methylparaben is a preservative and is a paraben. It is used to prevent the growth of fungus, mold, and other harmful bacteria. Parabens are chemicals used as preservatives in both cosmetics and food.

Methylparaben can be synthetically created. It can also be found naturally in some fruits, such as blueberries.

Oftentimes, Methylparaben is combined with other parabens to help increase the shelf life.

The safety of Methylparaben is currently being studied. While ongoing studies are looking into the safety of parabens, the results have been very mixed. Some studies have not found Methylparaben to be harmful.

Learn more about Methylparaben
Perfuming, Solvent
Very Disliked

Limonene is a fragrance that adds scent and taste to a formulation.

It's found in the peel oil of citrus fruits and other plants such as lavender and eucalyptus. The scent of limonene is generally described as "sweet citrus".

Limonene acts as an antioxidant, meaning it helps neutralize free radicals.

When exposed to air, oxidized limonene may sensitize the skin. Because of this, limonene is often avoided by people with sensitive skin.

The term 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term. For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance.

Learn more about Limonene
Disliked

Amodimethicone is a type of silicone.

Emollient, Emulsifying, Emulsion Stabilising
Very Disliked

Cetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product.

Cetyl Alcohol is not related to SD alcohol, denatured alcohol, or ethyl alcohol. The FDA allows products labeled "alcohol-free" to have fatty alcohols.

Cleansing

We don't have a description for Quaternium-87 yet.

Behentrimonium Methosulfate is an ammonium salt. It is mainly used to prevent static in haircare products as a surfactant.

Surfactants have differing ends: one side is hydrophilic while the other end is hydrophobic.

Surfactants also help your cleansers remove pollutants more easily from the skin.

Learn more about Behentrimonium Methosulfate

We don't have a description for Quaternium-33 yet.

Emulsifying

We don't have a description for Trideceth-6 yet.

Skin Conditioning

We don't have a description for 2-Oleamido-1,3-Octadecanediol yet.

Perfuming, Tonic
Very Disliked

Geraniol is used to add fragrance/parfum to a product. It is the main component of citronellol. It is a monoterpenoid and an alcohol.

Monoterpenes are naturally found in many parts of different plants.

Geraniol can be found in many essential oils including Rose Oil and Citronella Oil. The scent of Geraniol is often described as "rose-like". Many foods also contain Geraniol for fruit flavoring.

Geraniol can irritate the skin when exposed to air. However, irritation depends on the ability of geraniol to penetrate into the skin. In general, geraniol is not able to penetrate skin easily.

Geraniol is colorless and has low water-solubility. However, it is soluble in common organic solvents.

Like citronellol, it is a natural insect repellent.

2,6-Octadien-1-ol, 3,7-dimethyl-, (2E)-

Learn more about Geraniol
Perfuming
Very Disliked

Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.

Like Limonene, this ingredient oxidizes when exposed to air. Oxidized linalool can cause allergies and skin sensitivity.

This ingredient has a scent that is floral, spicy tropical, and citrus-like.

Learn more about Linalool
Humectant, Skin Conditioning, Skin Protecting
Loved

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.

As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.

Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.

Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.

In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.

This ingredient is organic, colorless, odorless, and non-toxic.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Learn more about Glycerin
Perfuming
Very Disliked

Citronellol is used to add fragrance/parfum to a product. It is often derived from plants such as roses. In fact, it can be found in many essential oils including geranium, lavender, neroli, and more. The scent of Citronellol is often described as "fresh, grassy, and citrus-like".

Since the Citronellol molecule is already unstable, Citronellol becomes irritating on the skin when exposed to air.

Citronellol is a modified terpene. Terpenes are unsaturated hydrocarbons found in plants. They make up the primary part of essential oils.

Citronellol is not able to be absorbed into deeper layers of the skin. It has low permeability,

Citronellol is also a natural insect repellent.

Learn more about Citronellol
Perfuming

Citral is a fragrance and used to add a lemon-like scent to products. It is both naturally found in plants and created synthetically. In plants, it is commonly occurring in lemon myrtle, lemongrass, lemon tea-tree, lemon verbena, and other citruses.

The EU mandates Citral be listed separately as a fragrance. It is a known allergen and may cause contact dermatitis. Citral can also used as a masking ingredient.

The term 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term. For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance.

The term 'citral' is a collective term for two geometric isomers: geranial/Citral A and neral/Citral B.

Learn more about Citral
Antimicrobial, Emulsifying, Preservative
Mixed

This ingredient is a preservative, antimicrobial, and emulsifier. It is often used in cosmetics for its ability to cleanse, condition, and reduce static.

Cetrimonium chloride is a quaternary ammonium salt, meaning it has a water-soluble structure.

Humectant, Moisturising
Loved

Trehalose is a disaccharide made of two glucose molecules (glucose is sugar!). Trehalose is used to help moisturize skin. It also has antioxidant properties.

As a humectant, trehalose helps draw moisture from the air to your skin. This helps keep your skin hydrated.

Due to its antioxidant properties, trehalose may help with signs of aging. Antioxidants help fight free-radical molecules, unstable molecules that may damage your skin.

In medicine, trehalose and hyaluronic acid are used to help treat dry eyes.

Some animals, plants, and bacteria create trehalose as a source of energy to survive freeze or lack of water.

Learn more about Trehalose

We don't have a description for Tamarindus Indica Seed Polysaccharide yet.

We don't have a description for Myrothamnus Flabellifolia Leaf Extract yet.

Masking, Perfuming
Very Disliked

Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.

Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.

In the US, the alternative name for parfum is 'fragrance'.

The term 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.

For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards.

One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.

Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.

Parfum can also be used to mask or cover an unpleasant scent.

The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.

Learn more about Parfum

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