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Product Comparison

Here's our complete breakdown comparing the ingredients, attributes, and more of Pureology Strength Cure Miracle Filler Heat Protectant Spray versus Kérastase Defense Thermique Blow Dry Primer .

Last updated on November 03, 2023. Published on November 23, 2023

Overview

What they are

These products are both reef safe heat protectants. They have a total of 19 ingredients in common

Cool Features

They both contain Vitamin E

Suited For

They're both likely to be good for anti aging, dry skin, brightening skin and scar healing

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 need an update? Let us know.

Heat Protectant American Brand United States
Heat Protectant French Brand France

Heat Protectant

These products protect hair from heat damage. Heat damage can come from curling irons, straighteners, other heat-tools, and the sun.

Heat Protectant

These products protect hair from heat damage. Heat damage can come from curling irons, straighteners, other heat-tools, and the sun.

Price

Ingredient Info

Click any item below to learn more and view relevant ingredients.
alcohol-free
silicon-free
fragrance-free
sulfate-free
paraben-free
oil-free
fungal-acne safe
reef-safe
eu-allergen-free
vegan
cruelty-free
alcohol-free
silicon-free
fragrance-free
sulfate-free
paraben-free
oil-free
fungal-acne safe
reef-safe
eu-allergen-free
vegan
cruelty-free

At a glance

Click on any of the items below to learn more

Notable Ingredients

Vitamin E

Benefits

Hydrating
Anti-Aging
Scar Healing
Brightening

Concerns

Drying (2)
May Worsen Oily Skin (2)
Acne Trigger (2)
Irritating (3)
Rosacea (3)
Eczema (4)

Notable Ingredients

Vitamin E
Ceramides
Peptides

Benefits

Hydrating (2)
Anti-Aging
Scar Healing
Brightening (2)

Concerns

Drying (2)
May Worsen Oily Skin (2)
Acne Trigger (2)
Irritating (4)
Rosacea (3)
Eczema (3)
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Ingredients Compared

Ingredients that are highlighted in purple are present in both products.

Ingredients Side-by-side

Ingredients that are highlighted in purple are present in both products.

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Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

1
What it does: Skin Conditioning, Solvent
Community Rating: 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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!

Learn more about Water

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 1.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 1.

2
What it does: Masking, Perfuming, Skin Conditioning
Community Rating: Very Disliked

Cocos Nucifera Oil is obtained from the kernels of the coconut fruit. In other words, this is coconut oil.

Coconut Oil is rich in fatty acids with lauric acid making up the majority of these. It also contains linoleic acid. Due to this high fatty acid content, coconut oil helps trap moisture and soften skin.

Despite being antibacterial, coconut oil may not be great for acne-prone skin. It is comedogenic and may clog pores. This ingredient may not be safe for malassezia or fungal acne.

Coconut Oil should not replace your sunscreen for UV protection. Studies show it only blocks about 20% of UV.

This oil is non-volatile and has a light scent.

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 Cocos Nucifera Oil

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 2.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 2.

3
What it does:
Community Rating: Disliked

Amodimethicone is a type of silicone.

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 3.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 3.

4
What it does:
Community Rating: Liked

We don't have a description for Polyquaternium-37.

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 4.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 4.

5
What it does: Preservative
Community Rating: Very Disliked

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and 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.

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 6.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 5.

6
What it does: Masking, Perfuming
Community Rating: Very Disliked

Parfum is a catch-all term for an ingredient or more that is used to give aroma to products. Parfum, or fragrance, 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. One example is Calendula flower extract. Essential oil ingredients still impart a scent or 'fragrance'.

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

Products use parfum often to give products a scent or cover up smells of different ingredients.

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

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 8.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 37.

7
What it does: Buffering
Community Rating: Mixed

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.

Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.

"Alkaline" refers to a high pH level. A low pH level would be considered acidic.

Learn more about Sodium Hydroxide

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 10.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 8.

8
What it does: Cleansing, Emulsifying

We don't have a description for Dimethicone Peg-7 Phosphate.

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 12.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 11.

We don't have a description for Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol.

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 13.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 23.

10
What it does: Skin Conditioning

We don't have a description for Ppg-1 Trideceth-6.

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 14.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 12.

11
What it does: Preservative
Community Rating: 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%.

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 15.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 14.

12
What it does: Emulsifying

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

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 16.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 13.

13
What it does: Antioxidant, Masking, Skin Conditioning
Community Rating: Liked

Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.

Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.

Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.

You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.

There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.

Learn more about Tocopherol

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 18.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 33.

14
What it does: Humectant, Masking, Skin Conditioning

We don't have a description for Xylose.

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 19.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 16.

15
What it does: Emulsifying
Community Rating: Very Disliked

Sorbitan Oleate is created from compounds in oleic acid and sorbitol. It is used to stabilize a product by preventing ingredients from separating.

Emulsifiers help keep ingredients together, such as oils and water.

Sorbitan Oleate may not be fungal acne safe. It can also worsen oily skin.

Learn more about Sorbitan Oleate

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 22.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 18.

16
What it does: Solvent
Community Rating: Very Disliked

Isopropyl Alcohol is more commonly known as rubbing alcohol. It is most commonly used as a solvent, meaning it helps other ingredients dissolve.

This ingredient is an astringent alcohol. Astringent alcohols may also irritate skin as they high amounts may strip away your skin's natural oils.

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 Isopropyl Alcohol

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 24.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 20.

17
What it does: Antimicrobial, Emulsifying, Preservative
Community Rating: Liked

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.

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 25.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 21.

18
What it does: Perfuming, Preservative, Solvent
Community Rating: Very Disliked

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 Alcohol

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 29.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 28.

19
What it does: Preservative
Community Rating: Disliked

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

Potassium sorbate is potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.

Potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.

Potassium sorbate is often used with stronger preservatives.

Learn more about Potassium Sorbate

Pureology Strength Cure Miracle Filler Heat Protectant Spray contains this as ingredient number 31.

Kérastase Defense Thermique Blow Dry Primer contains this as ingredient number 32.

Here's what our community thinks of the ingredients in these two products.

17% are loved or liked
6% have mixed ratings
36% are disliked or very disliked
42% have no rating yet
34% are loved or liked
5% have mixed ratings
42% are disliked or very disliked
18% have no rating yet

Usage

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Alternatives

Our Dupe Finder has found 2 potential alternatives that have similar ingredients to Pureology Strength Cure Miracle Filler Heat Protectant Spray.

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Our Dupe Finder has found 4 potential alternatives that have similar ingredients to Kérastase Defense Thermique Blow Dry Primer.

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