Necessaire The Shampoo Versus Seen Shampoo - Fragrance Free
Updated on February 18, 2025
Overview
What they are
These products are both vegan and reef safe shampoos. They have a total of 5 ingredients in common
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, scar healing and dark spots
Free From
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates
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
Necessaire The Shampoo 21 ingredients
Seen Shampoo 19 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
Necessaire The Shampoo 21 ingredients
Seen Shampoo 19 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Ingredients Side-by-side
Water
Skin ConditioningSodium Lauroyl Methyl Isethionate
CleansingAloe Barbadensis Leaf Juice
Skin Conditioning
Cocamidopropyl Betaine
Cleansing
Sodium Methyl Oleoyl Taurate
CleansingSodium Cocoyl Isethionate
CleansingPropanediol
Solvent
Niacinamide
Smoothing
Sodium Hyaluronate
Humectant
Panthenol
Skin Conditioning
Apium Graveolens Seed Extract
Antioxidant
Persea Gratissima Oil
Skin Conditioning
Glycerin
Humectant
Disodium Cocoyl Glutamate
CleansingCaprylic/Capric Triglyceride
Masking
Citric Acid
Buffering
Caprylhydroxamic Acid
Sodium Chloride
Masking
1,2-Hexanediol
Skin Conditioning
Caprylyl Glycol
EmollientSodium Benzoate
Masking
Water, Sodium Lauroyl Methyl Isethionate, Aloe Barbadensis Leaf Juice, Cocamidopropyl Betaine, Sodium Methyl Oleoyl Taurate, Sodium Cocoyl Isethionate, Propanediol, Niacinamide, Sodium Hyaluronate, Panthenol, Apium Graveolens Seed Extract, Persea Gratissima Oil, Glycerin, Disodium Cocoyl Glutamate, Caprylic/Capric Triglyceride, Citric Acid, Caprylhydroxamic Acid, Sodium Chloride, 1,2-Hexanediol, Caprylyl Glycol, Sodium Benzoate
Water
Skin ConditioningSodium Lauroyl Methyl Isethionate
CleansingCocamidopropylamine Oxide
CleansingGlycerin
Humectant
Acrylates Copolymer
Glycol Distearate
Emollient
Trisodium Ethylenediamine Disuccinate
C13-15 Alkane
SolventGuar Hydroxypropyltrimonium Chloride
Skin ConditioningPolyquaternium-7
Bisabolol
Masking
Citric Acid
Buffering
Disodium EDTA
Phenoxyethanol
Preservative
Ethylhexylglycerin
Skin ConditioningAminomethyl Propanol
BufferingSodium Hydroxide
BufferingTocopherol
Antioxidant
Sodium Benzoate
Masking
Water, Sodium Lauroyl Methyl Isethionate, Cocamidopropylamine Oxide, Glycerin, Acrylates Copolymer, Glycol Distearate, Trisodium Ethylenediamine Disuccinate, C13-15 Alkane, Guar Hydroxypropyltrimonium Chloride, Polyquaternium-7, Bisabolol, Citric Acid, Disodium EDTA, Phenoxyethanol, Ethylhexylglycerin, Aminomethyl Propanol, Sodium Hydroxide, Tocopherol, Sodium Benzoate
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 AcidGlycerin 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 GlycerinSodium 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 BenzoateSodium Lauroyl Methyl Isethionate is a cleansing ingredient. It is a surfactant, meaning it helps gather dirt, oil, and other pollutants. This helps them be rinsed away easily.
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 WaterIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Necessaire The Shampoo 21 ingredients
Seen Shampoo 19 ingredients
