Here's our complete breakdown comparing the ingredients, attributes, and more of K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo versus Cosmica Volumising Shampoo .
Published on July 27, 2023
Overview
What they are
These products are both vegan and reef safe shampoos. They have a total of 7 ingredients in common
Suited For
They're both likely to be good for dry skin, brightening skin and sensitive skin
Free From
They both do not contain any harsh alcohols, common allergens, 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
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
Cosmica Volumising Shampoo 42 ingredients
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 🎉
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 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Vegan
This product is vegan 🎉
Not Cruelty Free
This product is not cruelty-free 😥
At a glance
Click on any of the items below to learn more
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
Cosmica Volumising Shampoo 42 ingredients
Benefits
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Concerns
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Notable Ingredients
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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 3 ingredients 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:
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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.
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
Cosmica Volumising Shampoo 42 ingredients
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
Water • Cocamidopropyl Betaine • Sodium Methyl Cocoyl Taurate • Sodium Lauroyl Methyl Isethionate • Glycerin • Decyl Glucoside • Sodium Chloride • Panthenol • Hydrolyzed Rice Protein • Oryza Sativa Seed Protein • Oryza Sativa Extract • Allantoin • Niacinamide • Pyridoxine Hcl • Calcium Pantothenate • Sodium Ascorbyl Phosphate • Tocopheryl Acetate • Potassium Laureth-4 Carboxylate • Polyquaternium-22 • C12-13 Pareth-9 • Peg-120 Methyl Glucose Trioleate • Peg-150 Pentaerythrityl Tetrastearate • Coconut Acid • Peg-6 Caprylic/Capric Glycerides • Dicaprylyl Ether • Trisodium Ethylenediamine Disuccinate • Glyceryl Oleate • Sodium Starch Octenylsuccinate • Propanediol • Maltodextrin • Phytic Acid • Sodium Citrate • Gluconolactone • Silica • Calcium Gluconate • Sodium Gluconate • Citric Acid • Sodium Benzoate • Phenoxyethanol • Potassium Sorbate • Benzoic Acid • Parfum
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 WaterK18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 1.
Cosmica Volumising 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 BetaineK18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 3.
Cosmica Volumising Shampoo contains this as ingredient number 2.
Panthenol (also referred to as pro-vitamin B5) is a common ingredient that helps hydrate and soothe the skin.
lt is a humectant, meaning that it helps the skin attract and retain moisture.
Another benefit is the anti-inflammatory abilities. This means that it's great for sensitive, irritation-prone skin.
Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.
Learn more about PanthenolK18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 7.
Cosmica Volumising Shampoo contains this as ingredient number 8.
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 GlycerinK18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 8.
Cosmica Volumising Shampoo contains this as ingredient number 5.
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 AcidK18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 14.
Cosmica Volumising Shampoo contains this as ingredient number 41.
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 AcidK18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 15.
Cosmica Volumising Shampoo contains this as ingredient number 37.
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 ParfumK18 Hair PEPTIDE PREP™ pH Maintenance Shampoo contains this as ingredient number 17.
Cosmica Volumising Shampoo contains this as ingredient number 42.
Here's what our community thinks of the ingredients in these two products.
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
Cosmica Volumising Shampoo 42 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
Cosmica Volumising Shampoo 42 ingredients
Alternatives
Our Dupe Finder has found 50 potential alternatives that have similar ingredients to K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo.
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