Here's our complete breakdown comparing the ingredients, attributes, and more of Joico Defy Damage Protective Shampoo versus K18 Hair Damage Shield pH Protective Shampoo .
Last updated on February 12, 2024. Published on March 02, 2024
Overview
What they are
These products are both cruelty-free and reef safe shampoos. They have a total of 8 ingredients in common
Cool Features
They both contain peptides
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 or parabens
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.
Price
Ingredient Info
Joico Defy Damage Protective Shampoo 40 ingredients
K18 Hair Damage Shield pH Protective Shampoo 19 ingredients
Alcohol Free
This product is free of harsh alcohols 🎉
Contains Silicon
Ingredients in this product that are types of silicon:
Contains Fragrance
Ingredients in this product that are forms of fragrance:
Contains Sulfate
Ingredients in this product that are types of sulfate:
Paraben Free
This product is free of parabens 🎉
Contains Oils
Ingredients in this product that are types of oil:
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:
Non Vegan
This product is not 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 🎉
Non Vegan
This product is not vegan 😥
Cruelty Free
This product is cruelty-free 🎉
At a glance
Click on any of the items below to learn more
Joico Defy Damage Protective Shampoo 40 ingredients
K18 Hair Damage Shield pH Protective Shampoo 19 ingredients
Notable Ingredients
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Benefits
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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 2 ingredients 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:
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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This product contains 3 ingredients that may have this attribute:
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Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
Joico Defy Damage Protective Shampoo 40 ingredients
K18 Hair Damage Shield pH Protective Shampoo 19 ingredients
Water • Sodium C14-16 Olefin Sulfonate • Cocamidopropyl Betaine • Sodium Methyl Cocoyl Taurate • Sodium Lauroamphoacetate • Lauryl Glucoside • Disodium Laureth Sulfosuccinate • Betaine • Phenoxyethanol • Sodium Lauryl Sulfoacetate • Dimethicone Propyl Pg-Betaine • Arginine • Avena Sativa Peptide • Phosphatidylcholine • Moringa Oleifera Seed Oil • Laurdimonium Hydroxypropyl Hydrolyzed Keratin • Arginine Hcl • Glycol Distearate • Guar Hydroxypropyltrimonium Chloride • Isostearamide Mipa • Polyquaternium-47 • Citric Acid • Polyquaternium-7 • Laureth-4 • Peg-120 Methyl Glucose Dioleate • Dimethicone Peg-8 Meadowfoamate • Peg-4 Laurate • Quaternium-80 • Methyl Gluceth-10 • Methoxy Peg/Ppg-7/3 Aminopropyl Dimethicone • Tetrasodium EDTA • Glyceryl Laurate • Tocopherol • Rosa Canina Fruit Oil • Dipropylene Glycol • C10-40 Isoalkylamidopropylethyldimonium Ethosulfate • Sodium Hydroxide • Iodopropynyl Butylcarbamate • Citronellol • Parfum
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 • Sodium Chloride • 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 WaterJoico Defy Damage Protective Shampoo contains this as ingredient number 1.
K18 Hair Damage Shield pH Protective Shampoo contains this as ingredient number 1.
Sodium C14-16 Olefin Sulfonate is a cleansing agent made from a mixture of long chain sulfonate salts. It can also help produce foam.
This ingredient may be drying. We recommend speaking with a professional if you have concerns.
Joico Defy Damage Protective Shampoo contains this as ingredient number 2.
K18 Hair Damage Shield pH Protective Shampoo contains this as ingredient number 2.
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 BetaineJoico Defy Damage Protective Shampoo contains this as ingredient number 3.
K18 Hair Damage Shield pH Protective 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 SulfoacetateJoico Defy Damage Protective Shampoo contains this as ingredient number 10.
K18 Hair Damage Shield pH Protective Shampoo contains this as ingredient number 5.
This ingredient is derived from guar gum.
It is a conditioning ingredient, meaning it helps soften skin and hair.
Joico Defy Damage Protective Shampoo contains this as ingredient number 19.
K18 Hair Damage Shield pH Protective Shampoo contains this as ingredient number 10.
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 AcidJoico Defy Damage Protective Shampoo contains this as ingredient number 22.
K18 Hair Damage Shield pH Protective 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 HydroxideJoico Defy Damage Protective Shampoo contains this as ingredient number 37.
K18 Hair Damage Shield pH Protective Shampoo contains this as ingredient number 16.
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 ParfumJoico Defy Damage Protective Shampoo contains this as ingredient number 40.
K18 Hair Damage Shield pH Protective Shampoo contains this as ingredient number 18.
Here's what our community thinks of the ingredients in these two products.
Joico Defy Damage Protective Shampoo 40 ingredients
K18 Hair Damage Shield pH Protective Shampoo 19 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
Joico Defy Damage Protective Shampoo 40 ingredients
K18 Hair Damage Shield pH Protective Shampoo 19 ingredients
Alternatives
Our Dupe Finder has found 7 potential alternatives that have similar ingredients to Joico Defy Damage Protective Shampoo.
See 7 alternativesOur Dupe Finder has found 50 potential alternatives that have similar ingredients to K18 Hair Damage Shield pH Protective Shampoo.
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