Biolage Color Last Shampoo for Color-Treated Hair Versus Amika Bust Your Brass Cool Blonde Shampoo
Updated on March 03, 2025
Overview
What they are
These products are both vegan, cruelty-free, and reef safe shampoos. They have a total of 8 ingredients in common
Suited For
They're both likely to be good for brightening skin
Free From
They both do not contain any parabens
What's Inside
They both contain harsh alcohols, common allergens, fragrances and silicones
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
Biolage Color Last Shampoo for Color-Treated Hair 27 ingredients
Amika Bust Your Brass Cool Blonde Shampoo 47 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
Biolage Color Last Shampoo for Color-Treated Hair 27 ingredients
Amika Bust Your Brass Cool Blonde Shampoo 47 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningSodium Laureth Sulfate
Cleansing
Coco-Betaine
CleansingSodium Chloride
Masking
Glycol Distearate
Emollient
Dimethicone
Emollient
Parfum
Masking
Sodium Benzoate
Masking
Hexylene Glycol
EmulsifyingCocamide Mipa
EmulsifyingSalicylic Acid
Masking
Carbomer
Emulsion StabilisingGuar Hydroxypropyltrimonium Chloride
Skin ConditioningLimonene
Perfuming
Hexyl Cinnamal
Perfuming
Coumarin
Perfuming
Linalool
Perfuming
Butylphenyl Methylpropional
Perfuming
Benzyl Alcohol
Perfuming
Benzophenone-4
UV Absorber
Hydroxycitronellal
Perfuming
Amyl Cinnamal
Perfuming
Methyl Cocoate
Emollient
Orchis Mascula Extract
Skin ConditioningSodium Cocoate
Cleansing
Sodium Hydroxide
BufferingCitric Acid
Buffering
Water, Sodium Laureth Sulfate, Coco-Betaine, Sodium Chloride, Glycol Distearate, Dimethicone, Parfum, Sodium Benzoate, Hexylene Glycol, Cocamide Mipa, Salicylic Acid, Carbomer, Guar Hydroxypropyltrimonium Chloride, Limonene, Hexyl Cinnamal, Coumarin, Linalool, Butylphenyl Methylpropional, Benzyl Alcohol, Benzophenone-4, Hydroxycitronellal, Amyl Cinnamal, Methyl Cocoate, Orchis Mascula Extract, Sodium Cocoate, Sodium Hydroxide, Citric Acid
Water
Skin ConditioningSodium C14-16 Olefin Sulfonate
Cleansing
Cocamidopropyl Betaine
Cleansing
Glycerin
Humectant
Sodium Methyl Cocoyl Taurate
Cleansing
Disodium Cocoamphodiacetate
CleansingPEG-7 Glyceryl Cocoate
Emulsifying
Glyceryl Stearate
Emollient
Hippophae Rhamnoides Fruit/Seed Oil
Antimicrobial
Borago Officinalis Seed Oil
Emollient
Persea Gratissima Oil
Skin Conditioning
Mangifera Indica Seed Butter
Skin Conditioning
Butyrospermum Parkii Butter
Skin Conditioning
Hydroxypropyl Guar Hydroxypropyltrimonium Chloride
Lavandula Angustifolia Flower Extract
Cleansing
Chamomilla Recutita Flower Extract
Masking
Rosmarinus Officinalis Leaf Extract
AntimicrobialHydrolyzed Quinoa
Skin ConditioningAminomethyl Propanol
BufferingBis-PCA Dimethicone
Butylene Glycol
Humectant
Disodium EDTA
Disodium PEG-12 Dimethicone Sulfosuccinate
CleansingPEG-55 Propylene Glycol Oleate
PEG-12 Dimethicone
Skin Conditioning
PEG-150 Distearate
Emulsifying
PEG-150 Stearate
Polyquaternium-10
Polyquaternium-7
Polysorbate 20
Emulsifying
Propylene Glycol
Humectant
Polyethylene
Abrasive
Glycol
Humectant
Citric Acid
Buffering
Dehydroacetic Acid
Preservative
Benzyl Alcohol
Perfuming
Phenoxyethanol
Preservative
Potassium Sorbate
Preservative
Sodium Benzoate
Masking
Benzoic Acid
Masking
Stearic Acid
Cleansing
Sodium Chloride
Masking
Parfum
Masking
Benzyl Benzoate
Antimicrobial
Hydroxycitronellal
Perfuming
Limonene
Perfuming
CI 60730
Cosmetic ColorantWater, Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Glycerin, Sodium Methyl Cocoyl Taurate, Disodium Cocoamphodiacetate, PEG-7 Glyceryl Cocoate, Glyceryl Stearate, Hippophae Rhamnoides Fruit/Seed Oil, Borago Officinalis Seed Oil, Persea Gratissima Oil, Mangifera Indica Seed Butter, Butyrospermum Parkii Butter, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Lavandula Angustifolia Flower Extract, Chamomilla Recutita Flower Extract, Rosmarinus Officinalis Leaf Extract, Hydrolyzed Quinoa, Aminomethyl Propanol, Bis-PCA Dimethicone, Butylene Glycol, Disodium EDTA, Disodium PEG-12 Dimethicone Sulfosuccinate, PEG-55 Propylene Glycol Oleate, PEG-12 Dimethicone, PEG-150 Distearate, PEG-150 Stearate, Polyquaternium-10, Polyquaternium-7, Polysorbate 20, Propylene Glycol, Polyethylene, Glycol, Citric Acid, Dehydroacetic Acid, Benzyl Alcohol, Phenoxyethanol, Potassium Sorbate, Sodium Benzoate, Benzoic Acid, Stearic Acid, Sodium Chloride, Parfum, Benzyl Benzoate, Hydroxycitronellal, Limonene, CI 60730
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 WaterChances are, you eat sodium chloride every day. Sodium Chloride is also known as table salt.
This ingredient has many purposes in skincare: thickener, emulsifier, and exfoliator.
You'll most likely find this ingredient in cleansers where it is used to create a gel-like texture. As an emulsifier, it also prevents ingredients from separating.
There is much debate on whether this ingredient is comedogenic. The short answer - comedogenic ratings don't tell the whole story. Learn more about comegodenic ratings here.
The concensus about this ingredient causing acne seems to be divided. Research is needed to understand if this ingredient does cause acne.
Scrubs may use salt as the primary exfoliating ingredient.
Learn more about Sodium ChlorideParfum 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 ParfumSodium 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 BenzoateLimonene 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 LimoneneBenzyl Alcohol is most commonly used as a preservative. It also has a subtle, sweet smell. Small amounts of Benzyl Alcohol is not irritating and safe to use in skincare products. Most Benzyl Alcohol is derived from fruits such as apricots.
Benzyl Alcohol has both antibacterial and antioxidant properties. These properties help lengthen the shelf life of products. Benzyl Alcohol is a solvent and helps dissolve other ingredients. It can also improve the texture and spreadability.
Alcohol comes in many different forms. Different types of alcohol will have different effects on skin. This ingredient is an astringent alcohol.
Using high concentrations of these alcohols are drying on the skin. They may strip away your skin's natural oils and even damage your skin barrier. Astringent alcohols may also irritate skin.
Other types of astringent alcohols include:
According to the National Rosacea Society based in the US, you should be mindful of products with these alcohols in the top half of ingredients.
Any type of sanitizing product will have high amounts of alcohol to help kill bacteria and viruses.
Learn more about Benzyl AlcoholHydroxycitronellal is a fragrance created from citronellal. The smell of hydroxycitronellal is often described as "citrus-like" or "melon-like".
Hydroxycitronellal is a known EU allergen and may cause irritation when applied to the skin.
Citric 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 products.
When to use
Biolage Color Last Shampoo for Color-Treated Hair 27 ingredients
Amika Bust Your Brass Cool Blonde Shampoo 47 ingredients
Reviews
Here's what our community thinks
Biolage Color Last Shampoo for Color-Treated Hair 27 ingredients
Well, it smells nice at least. I was already annoyed that the shampoo was stripping my dye as this is meant to be dye safe... then after about a month my hair started thinning and that is a much bigger issue.
