Here's our complete breakdown comparing the ingredients, attributes, and more of Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum versus Peter Thomas Roth FIRMx Collagen Serum .
Last updated on August 07, 2023. Published on January 10, 2021
Overview
What they are
These products are both reef safe serums. They have a total of 14 ingredients in common
Cool Features
They both contain AHA 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 harsh alcohols, 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.
Price
Ingredient Info
Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum 38 ingredients
Peter Thomas Roth FIRMx Collagen Serum 39 ingredients
Alcohol Free
This product is free of harsh alcohols 🎉
Contains Silicon
Ingredients in this product that are types of silicon:
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Contains Oils
Ingredients in this product that are types of oil:
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
Contains EU Allergens
Ingredients in this product that are EU allergens:
Non Vegan
This product is not vegan 😥
Not Cruelty Free
This product is not cruelty-free 😥
Alcohol Free
This product is free of harsh alcohols 🎉
Contains Silicon
Ingredients in this product that are types of silicon:
Fragrance Free
This product is free of fragrances 🎉
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Non Vegan
This product is not vegan 😥
Not Cruelty Free
This product is not cruelty-free 😥
At a glance
Click on any of the items below to learn more
Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum 38 ingredients
Peter Thomas Roth FIRMx Collagen Serum 39 ingredients
Notable Ingredients
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Benefits
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Concerns
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Notable Ingredients
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 3 ingredients that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
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This product contains 1 ingredient that may have this attribute:
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Concerns
This product contains 1 ingredient that may have this attribute:
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Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum 38 ingredients
Peter Thomas Roth FIRMx Collagen Serum 39 ingredients
Water • Glycerin • Butylene Glycol • 3-O-Ethyl Ascorbic Acid • Polymethylsilsesquioxane • Sodium Citrate • Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer • Niacinamide • Ethoxydiglycol • Algae Exopolysaccharides • Chlorella Protothecoides Oil • Vinyl Dimethicone • Citric Acid • Algae Extract • Peg-12 Dimethicone • Palmitoyl Oligopeptide • Palmitoyl Tetrapeptide-7 • Caprylyl Glycol • Xanthan Gum • Collagen • Ethylhexylglycerin • Hexylene Glycol • Disodium EDTA • Plantago Lanceolata Leaf Extract • Sorbitan Isostearate • Polysorbate 60 • Sodium Lauroyl Lactylate • Carbomer • Polysorbate 20 • Ceramide NP • Ceramide AP • Ceramide EOP • Phytosphingosine • Cholesterol • Leuconostoc/Radish Root Ferment Filtrate • Phenoxyethanol • Parfum • Coumarin
Collagen • Water • Dimethicone • Butylene Glycol • Polysilicone-11 • Glycerin • Caffeine • Squalane • Soluble Collagen • Collagen Amino Acids • Hydrolyzed Collagen • Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine • Palmitoyl Tripeptide-5 • Acetyl Tetrapeptide-2 • Sodium Hyaluronate • Hydroxyproline • Sodium Citrate • Citric Acid • Acrylamide/Sodium Acryloyldimethyltaurate Copolymer • Ammonium Acryloyldimethyltaurate Crosspolymer • Hydroxystearic Acid • Magnesium Chloride • Polysorbate 20 • Polysorbate 80 • Sodium Hydroxide • Sorbitan Isostearate • Decyl Glucoside • Lauryl Glucoside • Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate • Leuconostoc/Radish Root Ferment Filtrate • Disodium EDTA • Potassium Sorbate • Sodium Benzoate • Isohexadecane • Ethylhexylglycerin • Hexylene Glycol • Caprylyl Glycol • Phenoxyethanol • CI 77015
Ingredients Side-by-side
Ingredients that are highlighted in purple are present in both products.
Learn more about what what Com. / Irr. ratings are
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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterAlgenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 1.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 2.
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 GlycerinAlgenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 2.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 6.
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.
Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 3.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 4.
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 CitrateAlgenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 6.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 17.
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 AcidAlgenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 13.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 18.
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 GlycolAlgenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 18.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 37.
Collagen is the most abundant type of structural protein found in your body. In your skin, it is responsible for keeping it firm and youthful.
Your body uses collagen for a variety of tasks. These tasks include repairing and maintaning tissues, helping cells communicate, and helping your body’s immune system respond to attacks.
Collagen is comprised mostly of glycine, proline, and hydroxypoline. These are amino acids.
Collagen can be used in the morning or night. It will not increase sun sensitivity, but you should always wear sunscreen during the day.
Learn more about CollagenAlgenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 20.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 1.
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.
Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 21.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 35.
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 GlycolAlgenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 22.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 36.
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 EDTAAlgenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 23.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 31.
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 IsostearateAlgenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 25.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 26.
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 20Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 29.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 23.
Leuconostoc/Radish Root Ferment Filtrate is a natural preservative. It comes from fermenting radish roots with a bacteria called leuconostoc. Leuconostoc comes from lactic acid. This bacteria is used to make the traditional Korean side-dish, kimchi. It is also used to make sourdough bread (both incredibly yummy foods).
Leuconostoc/Radish Root Ferment Filtrate has antimicrobial properties and helps prevent the growth of bacteria in a product.
It is believed the preservation property comes from salicylic acid and ammonium salt, neither of which are involved in the fermentation process.
Learn more about Leuconostoc/Radish Root Ferment FiltrateAlgenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 35.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 30.
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.
Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum contains this as ingredient number 36.
Peter Thomas Roth FIRMx Collagen Serum contains this as ingredient number 38.
Here's what our community thinks of the ingredients in these two products.
Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum 38 ingredients
Peter Thomas Roth FIRMx Collagen Serum 39 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum 38 ingredients
Peter Thomas Roth FIRMx Collagen Serum 39 ingredients
Alternatives
Our Dupe Finder has found 26 potential alternatives that have similar ingredients to Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum.
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