Here's our complete breakdown comparing the ingredients, attributes, and more of Pureology Pure Volume Shampoo versus K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo .
Published on October 01, 2023
Overview
What they are
These products are both vegan, cruelty-free, and reef safe 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 harsh alcohols, oils, parabens, silicones 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.
Ingredient Info
Pureology Pure Volume Shampoo 35 ingredients
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
Alcohol Free
This product is free of harsh alcohols 🎉
Silicon Free
This product is free of silicons 🎉
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 🎉
Contains EU Allergens
Ingredients in this product that are EU allergens:
Vegan
This product is vegan 🎉
Cruelty Free
This product is 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 🎉
Malassezia Safe
This product is free of malassezia feeding ingredients 🎉
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
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
Pureology Pure Volume Shampoo 35 ingredients
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
Notable Ingredients
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Benefits
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Concerns
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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:
Concerns
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.
Pureology Pure Volume Shampoo 35 ingredients
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
Water • Cocamidopropyl Betaine • Disodium Laureth Sulfosuccinate • Sodium Lauryl Sulfoacetate • Sodium Lauroyl Sarcosinate • Sodium Chloride • Glycol Distearate • Ppg-5-Ceteth-20 • Sodium Polystyrene Sulfonate • Decyl Glucoside • Parfum • Citric Acid • Sodium Hydroxide • Sodium Benzoate • Carbomer • Peg-55 Propylene Glycol Oleate • Propylene Glycol • Coco-Betaine • Peg-150 Pentaerythrityl Tetrastearate • Salicylic Acid • Peg-6 Caprylic/Capric Glycerides • Glycerin • Butylene Glycol • Benzoic Acid • Tocopherol • Hydroxypropyltrimonium Hydrolyzed Wheat Protein • Helianthus Annuus Seed Extract • Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol • Limonene • Benzophenone-4 • Citronellol • Eucalyptus Globulus Leaf Extract • Phenoxyethanol • CI 17200 • Potassium Sorbate
Water • Sodium C14-16 Olefin Sulfonate • Cocamidopropyl Betaine • Sodium Methyl 2-Sulfolaurate • Sodium Lauryl Sulfoacetate • Sh-Oligopeptide-78 • Panthenol • Glycerin • Sodium Phytate • Guar Hydroxypropyltrimonium Chloride • Disodium 2-Sulfolaurate • Caprylyl Glycol • Caprylhydroxamic Acid • Benzoic Acid • Citric Acid • Sodium Hydroxide • Parfum • Limonene
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 WaterPureology Pure Volume Shampoo contains this as ingredient number 1.
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 1.
Cocamidopropyl Betaine is a fatty acid created by mixing similar compounds in coconut oil and dimethylaminopropylamine. Dimethylaminopropylamine is a diamine, an amine with two amino groups.
Cocamidopropyl Betaine is a surfactant and cleanser. It helps gather the dirt, pollutants, and other impurities in your skin to be washed away. It also helps thicken a product and make the texture more creamy.
Being created from coconut oil means Cocamidopropyl Betaine is hydrating for the skin.
While Cocamidopropyl Betaine was believed to be an allergen, a study from 2012 disproved this. It found two compounds in unpure Cocamidopropyl Betaine to be the irritants: aminoamide and 3-dimethylaminopropylamine. High-grade and pure Cocamidopropyl Betaine did not induce allergic reactions during this study.
Learn more about Cocamidopropyl BetainePureology Pure Volume Shampoo contains this as ingredient number 2.
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 3.
Sodium Lauryl Sulfoacetate is an organic salt with a naturally sweet odor.
In cosmetics, this ingredient is used to increase the volume of foam. It is also an emulsifier and cleansing agent.
Sodium Lauryl Sulfoacetate helps reduce the surface tension of dirt, oil, and other pollutants.
Cosmetic Ingredient Review found this ingredient to irritate the eyes and skin in concentrations of 0.18% and 0.7%.
Learn more about Sodium Lauryl SulfoacetatePureology Pure Volume Shampoo contains this as ingredient number 4.
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 5.
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 ParfumPureology Pure Volume Shampoo contains this as ingredient number 11.
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 17.
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
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.
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 look more even.
Read more about some other popular AHA's here:
Learn more about Citric AcidPureology Pure Volume Shampoo contains this as ingredient number 12.
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 15.
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 HydroxidePureology Pure Volume Shampoo contains this as ingredient number 13.
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 16.
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 GlycerinPureology Pure Volume Shampoo contains this as ingredient number 22.
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 8.
Benzoic Acid is used to preserve and adjust the pH of products.
The antimicrobial property of Benzoic Acid helps elongate a product's shelf life. Its main role is to reduce fungi growth and is not found to be effective at fighting bacteria. Therefore Benzoic Acid is always added along with other preservatives.
In its pure form, Benzoic Acid looks like a white crystalline solid. It has slight solubility in water.
The name of Benzoic Acid comes from gum benzoin, which used to be the sole source of deriving this ingredient. Benzoic Acid is the most simple aromatic carboxylic acid.
Benzoic Acid is naturally occuring in strawberries, mustard, cinnamon, and cloves. It has a slight scent but is not considered to be a fragrance.
Learn more about Benzoic AcidPureology Pure Volume Shampoo contains this as ingredient number 24.
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 14.
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 LimonenePureology Pure Volume Shampoo contains this as ingredient number 29.
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 18.
Here's what our community thinks of the ingredients in these two products.
Pureology Pure Volume Shampoo 35 ingredients
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
Pureology Pure Volume Shampoo 35 ingredients
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
Alternatives
Our Dupe Finder has found 50 potential alternatives that have similar ingredients to Pureology Pure Volume Shampoo.
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