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Product Comparison

Here's our complete breakdown comparing the ingredients, attributes, and more of Maui Moisture Nourish And Moisture + Coconut Milk Shampoo versus Kirkland Signature Moisture Shampoo .

Last updated on February 08, 2024. Published on March 23, 2024

Overview

What they are

These products are both vegan and reef safe shampoos. They have a total of 10 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 parabens or sulfates

What's Inside

They both contain fragrances and oils

We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that need an update? Let us know.

Shampoo British Brand United Kingdom
Shampoo American Brand United States

Shampoo

Detergent or soap for cleansing the hair.

Shampoo

Detergent or soap for cleansing the hair.

Price

Ingredient Info

Click any item below to learn more and view relevant ingredients.
alcohol-free
silicon-free
fragrance-free
sulfate-free
paraben-free
oil-free
fungal-acne safe
reef-safe
eu-allergen-free
vegan
cruelty-free
alcohol-free
silicon-free
fragrance-free
sulfate-free
paraben-free
oil-free
fungal-acne safe
reef-safe
eu-allergen-free
vegan
cruelty-free

At a glance

Click on any of the items below to learn more

Benefits

Hydrating
Redness Reducing
Reduces Irritation
Brightening

Concerns

Drying
May Worsen Oily Skin
Acne Trigger
Irritating
Rosacea (2)
Eczema (2)

Notable Ingredients

AHA
Vitamin C
Vitamin E (2)

Benefits

Hydrating (5)
Redness Reducing
Reduces Irritation
Skin Texture (2)
Reduces Large Pores
Anti-Aging (2)
Dark Spots
Scar Healing (3)
Acne Fighting
Brightening (5)

Concerns

Drying
May Worsen Oily Skin (2)
Irritating (3)
Rosacea (3)
Eczema (3)
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Ingredients Compared

Ingredients that are highlighted in purple are present in both products.

WaterSodium Cocoyl IsethionateCocamidopropyl HydroxysultainePotassium Cocoyl GlycinateDisodium Cocoyl GlutamateSodium Lauroyl Methyl IsethionateSodium Lauroyl SarcosinateDecyl GlucosidePotassium CocoateGlycereth-26Glycol DistearateCocamidopropylamine OxidePhenoxyethanolParfumSodium Cocoyl GlutamatePeg-120 Methyl Glucose DioleateMethyl Gluceth-20Quaternium-91AmodimethiconeAcrylates Copolymer Citric AcidDicaprylyl EtherPolyquaternium-10Guar Hydroxypropyltrimonium ChlorideChlorphenesinTrisodium Ethylenediamine DisuccinatePpg-3 Benzyl Ether MyristateGlyceryl OleateC11-15 Pareth-7Polyquaternium-39Laureth-9PhospholipidsGlycerinHydrolyzed Vegetable Protein Pg-Propyl SilanetriolPolyquaternium-55Sodium BenzoatePanthenolTrideceth-12Glycine Soja OilAcetic AcidTetrasodium EDTABenzoic AcidSodium HydroxideDisodium EDTAPotassium SorbateHydrolyzed Pea Protein Pg-Propyl SilanetriolCaprylyl GlycolTocopheryl AcetateHelianthus Annuus Seed OilAlcoholTocopherolArgania Spinosa Kernel OilAscorbic AcidPersea Gratissima OilCopaifera Officinalis ResinPassiflora Edulis Seed OilIsomaltEuterpe Oleracea Fruit OilAloe Barbadensis Leaf ExtractCucumis Sativus Fruit ExtractLycium Barbarum Fruit ExtractPunica Granatum ExtractMalus Domestica Fruit Cell Culture ExtractQuaternium-95PropanediolCamellia Sinensis Leaf ExtractPersea Gratissima Fruit ExtractXanthan GumLecithinVitis Vinifera Fruit Cell ExtractVitis Vinifera Seed ExtractPentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate

Ingredients Side-by-side

Ingredients that are highlighted in purple are present in both products.

Learn more about what what Com. / Irr. ratings are

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Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

1
What it does: Skin Conditioning, Solvent
Community Rating: Loved

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 Water

Maui Moisture Nourish And Moisture + Coconut Milk Shampoo contains this as ingredient number 2.

Kirkland Signature Moisture Shampoo contains this as ingredient number 1.

2
What it does:
Community Rating: Disliked

Polyquaternium-10 is an ammonium salt of hydroxyethylcellulose. It is a white and granular powder used as a film-former and anti-static agent.

This ingredient is commonly found in hair conditioning products. According to a manufacturer, its positive charge makes it great for absorbing hair proteins. The manufacturer also states this ingredient helps with curl retention.

For haircare friends: this ingredient is not a silicone.

Learn more about Polyquaternium-10

Maui Moisture Nourish And Moisture + Coconut Milk Shampoo contains this as ingredient number 11.

Kirkland Signature Moisture Shampoo contains this as ingredient number 23.

3
What it does: Emollient, Emulsifying, Skin Conditioning
Community Rating: Very Disliked

Glycol Distearate serves as a pearlizing or opacifying agent in cosmetic products.

It's often included in cleansers and haircare products to give them a lustrous or shimmering appearance.

It is derived from stearic acid, a natural fatty acid commonly found in vegetable oils and animal fats.

Glycol Distearate isn't fungal acne safe.

Learn more about Glycol Distearate

Maui Moisture Nourish And Moisture + Coconut Milk Shampoo contains this as ingredient number 12.

Kirkland Signature Moisture Shampoo contains this as ingredient number 11.

4
What it does: Skin Conditioning
Community Rating: Liked

This ingredient is derived from guar gum.

It is a conditioning ingredient, meaning it helps soften skin and hair.

Maui Moisture Nourish And Moisture + Coconut Milk Shampoo contains this as ingredient number 16.

Kirkland Signature Moisture Shampoo contains this as ingredient number 24.

5
What it does: Humectant, Skin Conditioning, Skin Protecting, Solvent
Community Rating: Loved

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 Glycerin

Maui Moisture Nourish And Moisture + Coconut Milk Shampoo contains this as ingredient number 17.

Kirkland Signature Moisture Shampoo contains this as ingredient number 33.

6
What it does: Buffering, Masking
Community Rating: Disliked

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 Acid

Maui Moisture Nourish And Moisture + Coconut Milk Shampoo contains this as ingredient number 21.

Kirkland Signature Moisture Shampoo contains this as ingredient number 21.

7
What it does: Buffering
Community Rating: Mixed

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 Hydroxide

Maui Moisture Nourish And Moisture + Coconut Milk Shampoo contains this as ingredient number 22.

Kirkland Signature Moisture Shampoo contains this as ingredient number 43.

8
What it does: Emollient, Skin Conditioning
Community Rating: Very Disliked

Glycine Soja Oil comes from the soybean. Glycine Soja is native to eastern Asia.

Soybean oil is an emollient. It is rich in antioxidants and fatty acids including palmitic, stearic, oleic, and linoleic acids.

As an emollient, the fatty acids in soybean oil helps keep your skin soft and hydrated. It does so by creating a film on top that traps moisture in.

Soybean oil is also rich in vitamin E, a potent antioxidant. Vitamin E is also anti-inflammatory and provides a soothing effect.

Studies show soy may help fade hyperpigmentation from UVB. It does so by disrupting the melanin process from UVB induced skin inflammation.

This ingredient may not be malassezia folliculitis, or fungal-acne, safe.

Soybeans are rich in proteins and are part of the legume family. Foods made with soybeans include tofu, soymilk, edamame, miso, and soy sauce.

Learn more about Glycine Soja Oil

Maui Moisture Nourish And Moisture + Coconut Milk Shampoo contains this as ingredient number 24.

Kirkland Signature Moisture Shampoo contains this as ingredient number 39.

9
What it does: Masking, Preservative
Community Rating: Disliked

Sodium 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.

Sodium Benzoate 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 Benzoate

Maui Moisture Nourish And Moisture + Coconut Milk Shampoo contains this as ingredient number 25.

Kirkland Signature Moisture Shampoo contains this as ingredient number 36.

10
What it does: Masking, Perfuming
Community Rating: Very Disliked

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 Parfum

Maui Moisture Nourish And Moisture + Coconut Milk Shampoo contains this as ingredient number 27.

Kirkland Signature Moisture Shampoo contains this as ingredient number 14.

Here's what our community thinks of the ingredients in these two products.

19% are loved or liked
10% have mixed ratings
61% are disliked or very disliked
10% have no rating yet
31% are loved or liked
11% have mixed ratings
38% are disliked or very disliked
21% have no rating yet

Usage

Here's some more info on how this product is used by our community.

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