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Product Comparison

Here's our complete breakdown comparing the ingredients, attributes, and more of Hask Tea Tree Oil & Rosemary Invigorating Shampoo versus BioSilk Silk Therapy Shampoo .

Last updated on October 14, 2023. Published on October 28, 2023

Overview

What they are

These products are both reef safe shampoos. They have a total of 12 ingredients in common

Suited For

They're both likely to be good for sensitive skin

Free From

They both do not contain any harsh alcohols, parabens or sulfates

What's Inside

They both contain common allergens, 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 American Brand United States
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
Good For Oily Skin
Reduces Irritation
Brightening

Concerns

Drying
Acne Trigger
Irritating (4)
Rosacea (3)
Eczema (4)

Benefits

Reduces Irritation

Concerns

Irritating (2)
Rosacea
Eczema (3)
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Ingredients Compared

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

Ingredients Side-by-side

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

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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

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 1.

BioSilk Silk Therapy Shampoo contains this as ingredient number 1.

2
What it does: Cleansing, Foaming
Community Rating: Very Disliked

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.

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 2.

BioSilk Silk Therapy Shampoo contains this as ingredient number 2.

3
What it does: Cleansing
Community Rating: Disliked

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 Betaine

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 4.

BioSilk Silk Therapy Shampoo contains this as ingredient number 3.

4
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

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 6.

BioSilk Silk Therapy Shampoo contains this as ingredient number 25.

5
What it does: Skin Conditioning
Community Rating: Loved

Panthenol (also referred to as pro-vitamin B5) is a common ingredient that helps hydrate and soothe the skin.

lt is a humectant, meaning that it helps the skin attract and retain moisture.

Another benefit is the anti-inflammatory abilities. This means that it's great for sensitive, irritation-prone skin.

Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.

Learn more about Panthenol

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 10.

BioSilk Silk Therapy Shampoo contains this as ingredient number 9.

6
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.

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 15.

BioSilk Silk Therapy Shampoo contains this as ingredient number 11.

7
What it does: Preservative
Community Rating: Very Disliked

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and microbial growth. By itself, it has a scent that is similar to that of a rose.

It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 17.

BioSilk Silk Therapy Shampoo contains this as ingredient number 29.

8
What it does: Preservative
Community Rating: Very Disliked

MI is a preservative and known skin irritant. In the past, MI was used for its ability to prevent bacteria, yeast, and fungi growth in low doses.

Nowadays, you'll most likely see MI combined with Methylchloroisothiazolinone (MCI). Trade names for this combination include Kathon CG or Euxyl K 100.

Since then, numerous studies have shown this ingredient to cause contact dermatitis, or skin irritation.

The use of this ingredient varies around the world:

Learn more about Methylisothiazolinone

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 22.

BioSilk Silk Therapy Shampoo contains this as ingredient number 30.

9
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

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 24.

BioSilk Silk Therapy 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

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 26.

BioSilk Silk Therapy Shampoo contains this as ingredient number 31.

11
What it does: Perfuming, Solvent
Community Rating: Very Disliked

Limonene 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 Limonene

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 27.

BioSilk Silk Therapy Shampoo contains this as ingredient number 33.

12
What it does: Perfuming
Community Rating: Very Disliked

Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.

Linalool has the same effect as Limonene when exposed to air. Oxidized linalool can cause allergies and skin sensitivity.

Linalool has a scent that is floral, spicy tropical, and citrus-like.

Learn more about Linalool

Hask Tea Tree Oil & Rosemary Invigorating Shampoo contains this as ingredient number 28.

BioSilk Silk Therapy Shampoo contains this as ingredient number 34.

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

14% are loved or liked
14% have mixed ratings
50% are disliked or very disliked
21% have no rating yet
22% are loved or liked
6% have mixed ratings
56% are disliked or very disliked
17% have no rating yet

Usage

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

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Reviews

Here's what our community thinks

Hask Tea Tree Oil & Rosemary Invigorating Shampoo 28 ingredients

3.5 /5
from 2 ratings
manuka_honey's avatar

manuka_honey

7 months ago · Unsure Skin
Review

genuinely cooling and refreshing!
it has a great smell and it feels so refreshing for your scalp! i like it a lot.

lonelydeath's avatar

lonelydeath

22 days ago · Combination Skin
Review

I used this shampoo for a year. It was amazing and perfect for the first 8-9 months of using, but it began to irritate my scalp. It caused my head...

I used this shampoo for a year. It was amazing and perfect for the first 8-9 months of using, but it began to irritate my scalp. It caused my head to itch a lot to the point where I worried if I had lice. My hair is very oily and my hair looked amazing a few hours after using it and when I woke up and began to style my hair, it looked greasy again. I changed my shampoo and it's doing so much better.

BioSilk Silk Therapy Shampoo 36 ingredients

Silk Therapy Shampoo hasn't been rated yet.
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