Ouai Detox Shampoo Versus Biolage Scalp Sync Anti-Dandruff Shampoo
Updated on March 03, 2025
Overview
What they are
These products are both cruelty-free shampoos. They have a total of 9 ingredients in common
Suited For
They're both likely to be good for dry skin and brightening skin
Free From
They both do not contain any oils or silicones
What's Inside
They both contain harsh alcohols, common allergens and fragrances
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
Ouai Detox Shampoo 33 ingredients
Biolage Scalp Sync Anti-Dandruff Shampoo 33 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Ouai Detox Shampoo 33 ingredients
Biolage Scalp Sync Anti-Dandruff Shampoo 33 ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningSodium C14-16 Olefin Sulfonate
Cleansing
Sodium Lauroyl Methyl Isethionate
CleansingCocamidopropyl Betaine
Cleansing
Decyl Glucoside
CleansingAcrylates Copolymer
Cocamide Mipa
EmulsifyingParfum
Masking
Polysorbate 20
Emulsifying
Hydrolyzed Keratin
HumectantHydroxypropyl Guar Hydroxypropyltrimonium Chloride
Vinegar
PEG-150 Distearate
Emulsifying
Polyquaternium-7
Glycerin
Humectant
Benzophenone-4
UV Absorber
Sodium Chloride
Masking
Sodium Hydroxide
BufferingTetrasodium EDTA
Trisodium Ethylenediamine Disuccinate
Isopropyl Alcohol
Solvent
Propylene Glycol
Humectant
Citric Acid
Buffering
Disodium EDTA
Chlorphenesin
Antimicrobial
Sodium Benzoate
Masking
Phenoxyethanol
Preservative
Potassium Sorbate
Preservative
Linalool
Perfuming
Citronellol
Perfuming
CI 14700
Cosmetic ColorantCI 19140
Cosmetic ColorantCI 61570
Cosmetic ColorantWater, Sodium C14-16 Olefin Sulfonate, Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Betaine, Decyl Glucoside, Acrylates Copolymer, Cocamide Mipa, Parfum, Polysorbate 20, Hydrolyzed Keratin, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Vinegar, PEG-150 Distearate, Polyquaternium-7, Glycerin, Benzophenone-4, Sodium Chloride, Sodium Hydroxide, Tetrasodium EDTA, Trisodium Ethylenediamine Disuccinate, Isopropyl Alcohol, Propylene Glycol, Citric Acid, Disodium EDTA, Chlorphenesin, Sodium Benzoate, Phenoxyethanol, Potassium Sorbate, Linalool, Citronellol, CI 14700, CI 19140, CI 61570
Zinc Pyrithione 1%
Antiseborrhoeic
Water
Skin ConditioningSodium Laureth Sulfate
Cleansing
Disodium Cocoamphodiacetate
CleansingPEG-200 Hydrogenated Glyceryl Palmate
Cleansing
Polysorbate 20
Emulsifying
Hexylene Glycol
EmulsifyingDisodium Ricinoleamido Mea-Sulfosuccinate
CleansingParfum
Masking
Sodium Benzoate
Masking
Polysorbate 21
Emulsifying
Sodium Methylparaben
Preservative
Polyquaternium-10
PEG-7 Glyceryl Cocoate
Emulsifying
Menthol
Masking
Salicylic Acid
Masking
Ethylparaben
Preservative
Propylene Glycol
Humectant
Cola Nitida Seed Extract
Skin ConditioningHexyl Cinnamal
Perfuming
Butylphenyl Methylpropional
Perfuming
Citronellol
Perfuming
Linalool
Perfuming
Geraniol
Perfuming
Hydroxycitronellal
Perfuming
Amyl Cinnamal
Perfuming
Benzyl Alcohol
Perfuming
Alpha-Isomethyl Ionone
Perfuming
Mentha Piperita Extract
CleansingCamellia Sinensis Extract
Antioxidant
Malva Sylvestris Extract
AstringentCitric Acid
Buffering
Sodium Hydroxide
BufferingZinc Pyrithione 1%, Water, Sodium Laureth Sulfate, Disodium Cocoamphodiacetate, PEG-200 Hydrogenated Glyceryl Palmate, Polysorbate 20, Hexylene Glycol, Disodium Ricinoleamido Mea-Sulfosuccinate, Parfum, Sodium Benzoate, Polysorbate 21, Sodium Methylparaben, Polyquaternium-10, PEG-7 Glyceryl Cocoate, Menthol, Salicylic Acid, Ethylparaben, Propylene Glycol, Cola Nitida Seed Extract, Hexyl Cinnamal, Butylphenyl Methylpropional, Citronellol, Linalool, Geraniol, Hydroxycitronellal, Amyl Cinnamal, Benzyl Alcohol, Alpha-Isomethyl Ionone, Mentha Piperita Extract, Camellia Sinensis Extract, Malva Sylvestris Extract, Citric Acid, Sodium Hydroxide
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. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterParfum 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 ParfumPolysorbate 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 20Sodium 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 HydroxidePropylene 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 develop a rash when using this ingredient.
Learn more about Propylene GlycolCitric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and even out skin tone.
If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.
Read more about some other popular AHA's here:
Learn more about Citric AcidSodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.
Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.
Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.
It is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.
Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.
We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.
Learn more about Sodium BenzoateLinalool 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 LinaloolCitronellol 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 CitronellolIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Ouai Detox Shampoo 33 ingredients
Biolage Scalp Sync Anti-Dandruff Shampoo 33 ingredients
Reviews
Here's what our community thinks
Ouai Detox Shampoo 33 ingredients
Does a wonderful job at deep cleaning and giving volume. Been using it a few times a month for awhile now and haven't noticed any dryness. I actually shed less in the shower when I use this shampoo. Love it.
so good, cleans my scalp so well for me, my hair gets oily in a day and this made my hair less oily and it gets oily slower. i only use this twice a week. and it fs helps
