REDKEN Thermal Spray Low Hold Versus Kérastase Défense Thermique Heat Protecting Leave-In Treatment for Weakened Hair
Updated on August 19, 2024
Overview
What they are
These products are both reef safe heat protectants. They have a total of 11 ingredients in common
Suited For
They're both likely to be good for dry skin
Free From
They both do not contain any parabens or sulfates
What's Inside
They both contain harsh alcohols, common allergens, fragrances, oils and silicones
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
REDKEN Thermal Spray Low Hold 26 ingredients
Kérastase Défense Thermique Heat Protecting Leave-In Treatment for Weakened Hair 37 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
REDKEN Thermal Spray Low Hold 26 ingredients
Kérastase Défense Thermique Heat Protecting Leave-In Treatment for Weakened Hair 37 ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningAlcohol Denat.
Antimicrobial
PEG-40 Hydrogenated Castor Oil
Emulsifying
Phenoxyethanol
Preservative
Vp/Va Copolymer
Dimethicone PEG-7 Phosphate
CleansingParfum
Masking
Propylene Glycol
Humectant
Polyquaternium-16
Sodium Citrate
BufferingPolyquaternium-6
Xylose
HumectantEthylhexylglycerin
Skin ConditioningCitronellol
Perfuming
Limonene
Perfuming
Benzyl Salicylate
Perfuming
Butylphenyl Methylpropional
Perfuming
Benzyl Alcohol
Perfuming
Linalool
Perfuming
Vaccinium Macrocarpon Seed Oil
Skin Conditioning
Oleamide
2-Oleamido-1,3-Octadecanediol
Skin ConditioningCinnamyl Alcohol
Perfuming
Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde
Masking
Hexyl Cinnamal
Perfuming
Geraniol
Perfuming
Water, Alcohol Denat., PEG-40 Hydrogenated Castor Oil, Phenoxyethanol, Vp/Va Copolymer, Dimethicone PEG-7 Phosphate, Parfum, Propylene Glycol, Polyquaternium-16, Sodium Citrate, Polyquaternium-6, Xylose, Ethylhexylglycerin, Citronellol, Limonene, Benzyl Salicylate, Butylphenyl Methylpropional, Benzyl Alcohol, Linalool, Vaccinium Macrocarpon Seed Oil, Oleamide, 2-Oleamido-1,3-Octadecanediol, Cinnamyl Alcohol, Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde, Hexyl Cinnamal, Geraniol
Water
Skin ConditioningCocos Nucifera Oil
Masking
Amodimethicone
Polyquaternium-37
Phenoxyethanol
Preservative
Propylene Glycol Dicaprylate/Dicaprate
EmollientXylitylglucoside
Humectant
Sodium Hydroxide
BufferingAnhydroxylitol
Humectant
Xylitol
Humectant
Dimethicone PEG-7 Phosphate
CleansingPPG-1 Trideceth-6
Skin ConditioningTrideceth-6
EmulsifyingBehentrimonium Chloride
Preservative
Limonene
Perfuming
Xylose
HumectantEthylhexylglycerin
Skin ConditioningSorbitan Oleate
Emulsifying
Linalool
Perfuming
Isopropyl Alcohol
Solvent
Cetrimonium Chloride
Antimicrobial
Glycerin
Humectant
Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol
Skin ConditioningBenzyl Salicylate
Perfuming
Coumarin
Perfuming
Zingiber Officinale Root Extract
Masking
Citral
Perfuming
Benzyl Alcohol
Perfuming
Citronellol
Perfuming
Benzyl Benzoate
Antimicrobial
Leontopodium Alpinum Callus Culture Extract
Antioxidant
Potassium Sorbate
Preservative
Tocopherol
Antioxidant
Citric Acid
Buffering
Xanthan Gum
EmulsifyingDipeptide Diaminobutyroyl Benzylamide Diacetate
Skin Conditioning
Parfum
Masking
Water, Cocos Nucifera Oil, Amodimethicone, Polyquaternium-37, Phenoxyethanol, Propylene Glycol Dicaprylate/Dicaprate, Xylitylglucoside, Sodium Hydroxide, Anhydroxylitol, Xylitol, Dimethicone PEG-7 Phosphate, PPG-1 Trideceth-6, Trideceth-6, Behentrimonium Chloride, Limonene, Xylose, Ethylhexylglycerin, Sorbitan Oleate, Linalool, Isopropyl Alcohol, Cetrimonium Chloride, Glycerin, Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol, Benzyl Salicylate, Coumarin, Zingiber Officinale Root Extract, Citral, Benzyl Alcohol, Citronellol, Benzyl Benzoate, Leontopodium Alpinum Callus Culture Extract, Potassium Sorbate, Tocopherol, Citric Acid, Xanthan Gum, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Parfum
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Benzyl Alcohol is most commonly used as a preservative. It also has a subtle, sweet smell. Small amounts of Benzyl Alcohol is not irritating and safe to use in skincare products. Most Benzyl Alcohol is derived from fruits such as apricots.
Benzyl Alcohol has both antibacterial and antioxidant properties. These properties help lengthen the shelf life of products. Benzyl Alcohol is a solvent and helps dissolve other ingredients. It can also improve the texture and spreadability.
Alcohol comes in many different forms. Different types of alcohol will have different effects on skin. This ingredient is an astringent alcohol.
Using high concentrations of these alcohols are drying on the skin. They may strip away your skin's natural oils and even damage your skin barrier. Astringent alcohols may also irritate skin.
Other types of astringent alcohols include:
According to the National Rosacea Society based in the US, you should be mindful of products with these alcohols in the top half of ingredients.
Any type of sanitizing product will have high amounts of alcohol to help kill bacteria and viruses.
Learn more about Benzyl AlcoholBenzyl Salicylate is a solvent and fragrance additive. It is an ester of benzyl alcohol and salicylic acid. This ingredient can be naturally found in some plants and plant extracts.
In fragrances, Benzyl Salicylate may be a solvent or a fragrance component. In synthetic musk scents, it is used as a solvent. For floral fragrances such as lilac and jasmine, it is used as a fragrance component. The natural scent of Benzyl Salicylate is described as "lightly-sweet, slightly balsamic".
While Benzyl Salicylate has been associated with contact dermatitis and allergies, emerging studies show it may not be caused by this ingredient alone.
However, this ingredient is often used with fragrances and other components that may cause allergies. It is still listed as a known allergen in the EU. We recommend speaking with a professional if you have concerns.
Another study from 2021 shows Benzyl Salicylate may have anti-inflammatory properties.
Learn more about Benzyl SalicylateCitronellol 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 CitronellolWe don't have a description for Dimethicone PEG-7 Phosphate yet.
Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.
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 LimoneneLinalool 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 LinaloolParfum 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.
For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.
The term 'parfum' or '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 ParfumPhenoxyethanol 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.
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 WaterWe don't have a description for Xylose yet.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
REDKEN Thermal Spray Low Hold 26 ingredients
Kérastase Défense Thermique Heat Protecting Leave-In Treatment for Weakened Hair 37 ingredients
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REDKEN Thermal Spray Low Hold 26 ingredients
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