Overview
What they are
These products are both vegan, cruelty-free, and reef safe shampoos. They have a total of 4 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, parabens or silicones
What's Inside
They both contain 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
BondiBoost Thickening Therapy Shampoo 33 ingredients
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
At a glance
Click on any of the items below to learn more
BondiBoost Thickening Therapy Shampoo 33 ingredients
K18 Hair PEPTIDE PREP™ pH Maintenance Shampoo 18 ingredients
Notable Ingredients
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:
Benefits
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 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 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 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 3 ingredients that may have this attribute:
Ingredients Side-by-side
Aloe Barbadensis Leaf Juice comes from leaves of the aloe plant. Aloe Barbadensis Leaf Juice is best known for helping to soothe sunburns. It is also anti-inflammatory, moisturizing, antiseptic, and can help heal wounds.
This gentle cleansing and foaming ingredient is known for leaving a smooth feeling in skin and hair. It is made using coconut oil.
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.
Decyl Glucoside is a glucose-based surfactant. Surfactants help clean the skin by trapping oil, sebum, and dirt to be washed away.
Coco-Glucoside is a surfactant, or a cleansing ingredient. It is made from glucose and coconut oil.
Not safe for Fungal Acne
Glyceryl Oleate is a fragrance and isn't fungal acne safe.
Propanediol helps absorb ingredients into your skin, boosting their benefits. It can act as an emollient, making your skin softer. Propanediol can help products last longer by boosting the properties of preservatives within the formulation.
4 Benefits
Ceramide NG is a type of Ceramide. The NG stands for a sphinganine base.
Oil 2 Concerns
Sulfated Castor Oil is created from treating castor oil with sulfate. Castor Oil is an effective moisturizer for skin and hair. Read more about castor oil here.
Caprylic/Capric Triglyceride is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.
Helps hydrate Dry Skin Not safe for Fungal Acne
Argania Spinosa Kernel Oil is derived from the kernels of the argania spinosa tree. You may know it as argan oil.
Oil Not safe for Fungal Acne
Olea Europaea Fruit Oil is the fixed oil obtained from the ripe fruit of the Olive. In other words - olive oil.
Arginine is an amino acid that is important for human development. Your body uses is it to produce hair keratin and skin collagen.
Hydrolyzed collagen has a misleading name because it is actually a mixture of various proteins/peptides. This ingredient has skin hydrating properties.
Rosmarinus Officinalis Leaf Extract comes from rosemary. Rosemary is native to the Mediterranean.
Ascophyllum Nodosum Extract is from brown seaweed that grows in the northern Atlantic Ocean. It is an antioxidant. Antioxidants help fight off free-radicals. Free-radicals are molecules that may damage our skin cells.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
6 Benefits
Niacinamide has emerged as an all-star ingredient due to its many benefits.
Biotin is a B vitamin that is naturally produced by our bodies. It is also called Vitamin H.
Polyquaternium-7 is a light to clear colored liquid. It is commonly found in haircare products for its film-forming and anti-static properties.
Polyquaternium-10 is an ammonium salt of hydroxyethylcellulose. It is a white and granular powder used as a film-former and anti-static agent.
Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.
Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
2 Concerns
Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.
4 Benefits 2 Concerns
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
Aloe Barbadensis Leaf Juice, Sodium Methyl Cocoyl Taurate, Cocamidopropyl Betaine, Decyl Glucoside, Coco-Glucoside, Glyceryl Oleate, Propanediol, Hydrolyzed Quinoa, Hydrolyzed Jojoba Esters, Hydrolyzed Adansonia Digitata Seed Extract, Ceramide Ng, Sulfated Castor Oil, Caprylic/Capric Triglyceride, Argania Spinosa Kernel Oil, Olea Europaea Fruit Oil, Arginine, Hydrolyzed Collagen, Rosmarinus Officinalis Leaf Extract, Ascophyllum Nodosum Extract, Amaranthus Caudatus Seed Extract, Equisetum Arvense Leaf Extract, Acanthopanax Senticosus Root Extract, Sodium Hyaluronate, Niacinamide, Biotin, Polyquaternium-7, Polyquaternium-10, Potassium Sorbate, Pentylene Glycol, Caprylyl Glycol, Ethylhexylglycerin, Parfum, Citric Acid
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.
Sodium C14-16 Olefin Sulfonate is a cleansing agent made from a mixture of long chain sulfonate salts. It can also help produce foam.
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.
Sodium Lauryl Sulfoacetate is an organic salt with a naturally sweet odor.
Panthenol is a common ingredient that helps hydrate and soothe the skin. It can be found naturally in our skin and hair.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
Sodium Phytate is the synthetic salt form of phytic acid. Phytic acid is an antioxidant and can be found in plant seeds.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
May worsen Eczema
Benzoic Acid is used to preserve and adjust the pH of products.
4 Benefits 2 Concerns
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
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.
2 Concerns
Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.
Limonene is a fragrance that adds scent and taste to a formulation.
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 Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 BetaineCaprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolParfum 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.
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 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 ParfumCitric 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 AcidIngredient Ratings
Here's what our community thinks of the ingredients in these two products.
