Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum Versus Peter Thomas Roth FIRMx Collagen Serum
Updated on August 07, 2023
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, oily 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 needs an update? Let us know.
Ingredient Info
Algenist Genius Ultimate Anti-Aging Vitamin C+ Serum 38 ingredients
Peter Thomas Roth FIRMx Collagen Serum 39 ingredients
About this product
About this product
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
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Butylene Glycol
Humectant
3-O-Ethyl Ascorbic Acid
Skin Conditioning
Polymethylsilsesquioxane
Sodium Citrate
BufferingHydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingNiacinamide
Smoothing
Ethoxydiglycol
HumectantAlgae Exopolysaccharides
HumectantChlorella Protothecoides Oil
Emollient
Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer
Citric Acid
Buffering
Algae Extract
Emollient
PEG-12 Dimethicone
Skin Conditioning
Palmitoyl Oligopeptide
Cleansing
Palmitoyl Tetrapeptide-7
Skin Conditioning
Caprylyl Glycol
EmollientXanthan Gum
EmulsifyingCollagen
Moisturising
Ethylhexylglycerin
Skin ConditioningHexylene Glycol
EmulsifyingDisodium EDTA
Plantago Lanceolata Leaf Extract
AntimicrobialSorbitan Isostearate
Emulsifying
Polysorbate 60
Emulsifying
Sodium Lauroyl Lactylate
EmulsifyingCarbomer
Emulsion StabilisingPolysorbate 20
Emulsifying
Ceramide NP
Skin Conditioning
Ceramide AP
Skin Conditioning
Ceramide EOP
Skin Conditioning
Phytosphingosine
Skin Conditioning
Cholesterol
Emollient
Leuconostoc/Radish Root Ferment Filtrate
Antimicrobial
Phenoxyethanol
Preservative
Parfum
Masking
Coumarin
Perfuming
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/Methicone Silsesquioxane Crosspolymer, 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
Moisturising
Water
Skin ConditioningDimethicone
Emollient
Butylene Glycol
Humectant
Polysilicone-11
Glycerin
Humectant
Caffeine
Skin ConditioningSqualane
Emollient
Soluble Collagen
Humectant
Collagen Amino Acids
Moisturising
Hydrolyzed Collagen
Emollient
Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine
Skin Conditioning
Palmitoyl Tripeptide-5
Skin Conditioning
Acetyl Tetrapeptide-2
Skin Conditioning
Sodium Hyaluronate
Humectant
Hydroxyproline
Skin ConditioningSodium Citrate
BufferingCitric Acid
Buffering
Acrylamide/Sodium Acryloyldimethyltaurate Copolymer
Emulsion StabilisingAmmonium Acryloyldimethyltaurate/Vp Copolymer
Hydroxystearic Acid
Cleansing
Magnesium Chloride
Polysorbate 20
Emulsifying
Polysorbate 80
Emulsifying
Sodium Hydroxide
BufferingSorbitan Isostearate
Emulsifying
Decyl Glucoside
CleansingLauryl Glucoside
CleansingTetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate
Skin ConditioningLeuconostoc/Radish Root Ferment Filtrate
Antimicrobial
Disodium EDTA
Potassium Sorbate
Preservative
Sodium Benzoate
Masking
Isohexadecane
EmollientEthylhexylglycerin
Skin ConditioningHexylene Glycol
EmulsifyingCaprylyl Glycol
EmollientPhenoxyethanol
Preservative
CI 77015
Cosmetic ColorantCollagen, 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/Vp Copolymer, 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 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. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterGlycerin 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 GlycerinButylene 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.
- It has mild preservative properties.
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Sodium Citrate is the sodium salts of citric acid. In skincare, it is used to alter pH levels and acts as a preservative.
Its main functions are to maintain the pH of a product and neutralize metal ions.
The acidity of our skin is maintained by our glands and skin biome; normal pH level of skin is slightly acidic (~4.75-5.5).
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.
Learn more about Sodium CitrateCitric 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 AcidCaprylyl 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 GlycolCollagen is the most abundant type of structural protein found in your body. It is an effective skin moisturizer.
There is no conclusive proof that collagen is used by skin when applied topically. However, it is a great humectant that hydrates skin. Hydrated skin is associated with increased elasticity and a decrease in the appearance of wrinkles. It is also essential for maintaining a healthy skin barrier.
Biologically, collagen is responsible for keeping skin firm and youthful. Collagen is comprised mostly of glycine, proline, and hydroxypoline. These are amino acids.
Collagen will not increase sun sensitivity, but you should always wear sunscreen during the day.
Learn more about hydrolyzed collagen here.
Learn more about CollagenEthylhexylglycerin (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.
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 GlycolDisodium 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 EDTASorbitan 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 IsostearatePolysorbate 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 20Leuconostoc/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 ingredient has antimicrobial properties and helps prevent the growth of bacteria in a product.
Leuconostoc is used to make the traditional Korean side-dish, kimchi. It is also used to make sourdough bread (both incredibly yummy foods).
Learn more about Leuconostoc/Radish Root Ferment FiltratePhenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent 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.
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