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Product Comparison

Here's our complete breakdown comparing the ingredients, attributes, and more of Philosophy ultimate miracle worker fix retinol facial serum roller versus Peter Thomas Roth FIRMx Collagen Serum .

Published on January 10, 2021

Overview

What they are

These products are both reef safe serums. They have a total of 19 ingredients in common

Cool Features

They both contain AHA, hyaluronic acid and peptides

Suited For

They're both likely to be good for anti aging, dry skin, brightening skin, reducing pores, scar healing and better texture

Free From

They both do not contain any common allergens, parabens or sulfates

What's Inside

They both contain silicones

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

Serum American Brand United States
Serum American Brand United States

Serum

Serums are highly concentrated with ingredients to provide skin with benefits. They should be used after cleansing and before moisturizing.

Serum

Serums are highly concentrated with ingredients to provide skin with benefits. They should be used after cleansing and before moisturizing.

Price

Shop

Buy ultimate miracle worker fix retinol facial serum roller

Starts at $32.04
Shop

Buy FIRMx Collagen Serum

Starts at $39.50

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

Notable Ingredients

AHA
Retinoid
Vitamin C
Vitamin E
Hyaluronic Acid
Peptides (3)

Benefits

Hydrating (2)
Good For Oily Skin (2)
Skin Texture (3)
Reduces Large Pores (2)
Anti-Aging (4)
Dark Spots (2)
Scar Healing (4)
Acne Fighting
Brightening (6)

Concerns

Drying (3)
May Worsen Oily Skin (2)
Acne Trigger
Irritating (5)
Rosacea (4)
Eczema (5)

Notable Ingredients

AHA
Hyaluronic Acid
Peptides (3)

Benefits

Hydrating (2)
Skin Texture
Reduces Large Pores
Anti-Aging (4)
Scar Healing
Brightening (2)

Concerns

May Worsen Oily Skin
Irritating
Rosacea
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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

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 1.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 2.

2
What it does: Emollient, Skin Conditioning, Skin Protecting
Community Rating: Very Disliked

Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.

Dimethicone has been found increase absorption in skin, boosting the benefits of other ingredients. While there is concern for the safety of dimethicone, the levels used in skincare are safe for use.

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 2.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 3.

3
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

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 4.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 6.

4
What it does: Humectant, Masking, Skin Conditioning, Solvent
Community Rating: Mixed

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

  • It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
  • It is a humectant, which means that it helps attract moisture into the skin.
  • It helps improve product application.

Overall, Butylene Glycol is a safe and well-rounded ingredient. It is unlikely to irritate skin, and works well with pretty much all other ingredients.

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 8.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 4.

5
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.

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 9.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 38.

6
What it does: Emollient, Skin Conditioning
Community Rating: Loved

Squalane is an emollient that helps the skin hold onto moisture. It's an oily liquid that occurs naturally in certain types of fish and plant oils.

Because squalane boosts hydration in the skin, it also comes with plenty of benefits: it is an antioxidant and can help fight free radicals and skin damage. Squalane is also found to have a detoxifying effect when applied.

Squalane comes from squalene, which occurs naturally within the sebum of our skin. It is one of the oils our skin produces to keep itself hydrated. Squalane is the hydrogenated version of squalene and has a longer shelf life.

Research shows that squalane is non-irritating (even at 100% concentration).

In general, it's a fantastic ingredient. It does a great job at hydrating the skin, and it's suitable for those with sensitive skin.

The source of squalane may impact malassezia / fungal acne. This is because olive oil derived squalane can contain impurities such as fatty acids and plant waxes. Sugarcane derived squalane is recommended for anyone with malassezia concerns.

Is squalane vegan? This depends on the source. Squalane can be derived from both plants and animals. Most squalane used in skincare comes from plants.

Please note: the source of squalane is only known if disclosed by the brand. We recommend reaching out to the brand if you have any questions about their squalane.

Read more about squalene with an "e".

Learn more about Squalane

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 11.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 8.

7
What it does:
Community Rating: Disliked

We don't have a description for Polysilicone-11.

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 13.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 5.

8
What it does: Emollient, Humectant, Skin Conditioning
Community Rating: Liked

Caprylyl 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 Glycol

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 15.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 37.

9
What it does:
Community Rating: Disliked

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.

Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.

Learn more about Disodium EDTA

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 18.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 31.

10
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

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 19.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 25.

11
What it does: Emulsifying
Community Rating: Very Disliked

Polysorbate 20 is made by combining ethoxylation of sorbitan, ethylene oxide, and lauric acid. It is a mild cleansing agent, surfactant, and emulsifier.

As a surfactant, it helps collect dirt and oils for washing. Emulsifiers prevent oils and water from separating.

Polysorbate 20 also adds scent to a product. Since it is made using sorbitol, it has a sweet scent. Sorbitol can also be found in fruits such as apples and peaches.

The lauric acid used to create Polysorbate 20 is often derived from coconuts.

Polysorbate 20 may not be fungal acne safe.

Learn more about Polysorbate 20

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 24.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 23.

12
What it does: Skin Conditioning
Community Rating: Mixed

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 31.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 35.

13
What it does: Emulsifying
Community Rating: Very Disliked

Sorbitan Isostearate is an emulsifer and cleaning agent. It is created from isostearic acid and sorbitol.

As an emulsifier, Sorbitan Isostearate prevents oils and water from separating.

Due to its isostearic acid base, it may not be safe for Malassezia or fungal acne.

Learn more about Sorbitan Isostearate

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 35.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 26.

14
What it does: Cleansing, Emulsion Stabilising
Community Rating: Mixed

Decyl Glucoside is a glucose-based surfactant. Surfactants help clean the skin by trapping oil, sebum, and dirt to be washed away.

It is created by reacting glucose with the fatty acids from plants.

Decyl Glucoside also helps stabilize the ingredients in a product by preventing them from separating.

This ingredient is biodegradable and non-toxic. This ingredient is commonly found in baby shampoos.

Decyl Glucoside is sometimes used to stabilize the UV filter Tinosorb.

Learn more about Decyl Glucoside

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 41.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 27.

15
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

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 43.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 33.

16
What it does: Buffering, Masking
Community Rating: Mixed

Sodium Citrate is the sodium salts of citric acid. In skincare, it is used to alter pH levels and acts as a preservative.

Sodium Citrate helps maintain the pH of a product. Normal pH level of skin is slightly acidic (~4.75-5.5). The acidity of our skin is maintained by our glands and skin biome. Being slightly acidic allows our skin to create an "acid mantle". This acid mantle is a thin barrier that protects our skin from bacteria and contaminants.

Sodium Citrate is a chelating agent. It neutralizes metal ions from water and prevents them from binding to other ingredients. This ensures the other ingredients will not be altered.

Learn more about Sodium Citrate

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 44.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 17.

17
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

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 45.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 18.

18
What it does: Emulsifying, Skin Conditioning, Solvent
Community Rating: Disliked

Hexylene Glycol is a surfactant. Glycols are a class of alcohols. Hexylene Glycol is a surfactant and emulsifier.

As a surfactant, Hexylene Glycol helps gather dirt and oil on your skin to be washed away.

As an emulsifier, Hexylene Glycol helps keep water and oil together. This prevents them from separating in a product. Hexylene Glycol also thins out the texture of a product by lessening viscosity.

Hexylene Glycol has a small molecular weight.

Learn more about Hexylene Glycol

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 50.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 36.

19
What it does: Preservative
Community Rating: Disliked

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

Potassium sorbate is potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.

Potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.

Potassium sorbate is often used with stronger preservatives.

Learn more about Potassium Sorbate

Philosophy ultimate miracle worker fix retinol facial serum roller contains this as ingredient number 52.

Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 32.

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

29% are loved or liked
12% have mixed ratings
45% are disliked or very disliked
14% have no rating yet
38% are loved or liked
21% have mixed ratings
28% are disliked or very disliked
13% have no rating yet

Usage

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