Here's our complete breakdown comparing the ingredients, attributes, and more of Kérastase Résistance Serum Extentioniste Scalp & Hair Serum versus Ouai Hydrating Scalp Serum for Healthy, Fuller Looking Hair .
Last updated on January 15, 2024. Published on March 04, 2024
Overview
What they are
These products are both reef safe . They have a total of 4 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, reducing pores and scar healing
Free From
They both do not contain any oils, parabens or sulfates
What's Inside
They both contain fragrances
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that need an update? Let us know.
Scalp Treatment
Products to help treat conditions relating to the scalp.
Hair Serum
Liquid-based hair treatment to help nourish the hair.
Price
Ingredient Info
Kérastase Résistance Serum Extentioniste Scalp & Hair Serum 30 ingredients
Ouai Hydrating Scalp Serum for Healthy, Fuller Looking Hair 28 ingredients
Contains Alcohol
Ingredients in this product that are types of alcohol:
Contains Silicon
Ingredients in this product that are types of silicon:
Contains Fragrance
Ingredients in this product that are forms of fragrance:
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Non Vegan
This product is not vegan 😥
Not Cruelty Free
This product is not cruelty-free 😥
Alcohol Free
This product is free of harsh alcohols 🎉
Silicon Free
This product is free of silicons 🎉
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
Vegan
This product is vegan 🎉
Cruelty Free
This product is cruelty-free 🎉
At a glance
Click on any of the items below to learn more
Kérastase Résistance Serum Extentioniste Scalp & Hair Serum 30 ingredients
Ouai Hydrating Scalp Serum for Healthy, Fuller Looking Hair 28 ingredients
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
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Concerns
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
Notable Ingredients
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 3 ingredients that may have this attribute:
Concerns
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
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Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
Kérastase Résistance Serum Extentioniste Scalp & Hair Serum 30 ingredients
Ouai Hydrating Scalp Serum for Healthy, Fuller Looking Hair 28 ingredients
Water • Polyquaternium-37 • Paraffinum Liquidum • Amodimethicone • Polysorbate 20 • Quaternium-87 • Stearyl Alcohol • Menthoxypropanediol • Behentrimonium Chloride • Safflower Glucoside • Maltodextrin • Propylene Glycol • Euphorbia Cerifera Cera • Ppg-1 Trideceth-6 • Propanediol • Chlorhexidine Digluconate • Isopropyl Alcohol • Trideceth-6 • Acrylates Copolymer • Sorbitan Oleate • Polyquaternium-11 • Rose Extract • 2-Oleamido-1,3-Octadecanediol • Cetrimonium Chloride • Camellia Sinensis Leaf Extract • Xanthan Gum • Tocopherol • BHT • Sodium Citrate • Parfum
Water • Polysorbate 20 • Butylene Glycol • Glycerin • Polyquaternium-7 • Rhodiola Rosea Extract • Sodium Hyaluronate • Tocopheryl Acetate • Acetyl Tetrapeptide-3 • Tocopherol • Rosa Centifolia Flower Extract • Dextran • Trifolium Pratense Flower Extract • Acanthopanax Senticosus Root Extract • Rhaponticum Carthamoides Root Extract • Inonotus Obliquus Extract • Selaginella Lepidophylla Extract • Ethylhexylglycerin • Disodium EDTA • Sodium Hydroxide • Acrylates/C10-30 Alkyl Acrylate Crosspolymer • Citric Acid • Sodium Benzoate • Phenoxyethanol • Parfum • Eugenol • Limonene • Linalool
Ingredients Side-by-side
Ingredients that are highlighted in purple are present in both products.
Learn more about what what Com. / Irr. ratings are
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 WaterKérastase Résistance Serum Extentioniste Scalp & Hair Serum contains this as ingredient number 1.
Ouai Hydrating Scalp Serum for Healthy, Fuller Looking Hair contains this as ingredient number 1.
Polysorbate 20 is made by combining ethoxylation of sorbitan, ethylene oxide, and lauric acid. It is a mild cleansing agent, surfactant, and emulsifier.
As a surfactant, it helps collect dirt and oils for washing. Emulsifiers prevent oils and water from separating.
Polysorbate 20 also adds scent to a product. Since it is made using sorbitol, it has a sweet scent. Sorbitol can also be found in fruits such as apples and peaches.
The lauric acid used to create Polysorbate 20 is often derived from coconuts.
Polysorbate 20 may not be fungal acne safe.
Learn more about Polysorbate 20Kérastase Résistance Serum Extentioniste Scalp & Hair Serum contains this as ingredient number 5.
Ouai Hydrating Scalp Serum for Healthy, Fuller Looking Hair contains this as ingredient number 2.
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 TocopherolKérastase Résistance Serum Extentioniste Scalp & Hair Serum contains this as ingredient number 27.
Ouai Hydrating Scalp Serum for Healthy, Fuller Looking Hair contains this as ingredient number 10.
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 ParfumKérastase Résistance Serum Extentioniste Scalp & Hair Serum contains this as ingredient number 30.
Ouai Hydrating Scalp Serum for Healthy, Fuller Looking Hair contains this as ingredient number 25.
Here's what our community thinks of the ingredients in these two products.
Kérastase Résistance Serum Extentioniste Scalp & Hair Serum 30 ingredients
Ouai Hydrating Scalp Serum for Healthy, Fuller Looking Hair 28 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
Kérastase Résistance Serum Extentioniste Scalp & Hair Serum 30 ingredients
Ouai Hydrating Scalp Serum for Healthy, Fuller Looking Hair 28 ingredients
Alternatives
We haven't detected any alternatives for Kérastase Résistance Serum Extentioniste Scalp & Hair Serum.
Our Dupe Finder has found 2 potential alternatives that have similar ingredients to Ouai Hydrating Scalp Serum for Healthy, Fuller Looking Hair.
See 2 alternatives
