The INKEY List Retinol Serum Versus FaceTheory Regenacalm 2% Retinol and Vitamin C Serum S1
Updated on June 19, 2024
Overview
What they are
These products are both vegan, cruelty-free, and reef safe serums. They have a total of 4 ingredients in common
Cool Features
They both contain hyaluronic acid, retinoid, Vitamin C and Vitamin E
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, parabens or sulfates
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
The INKEY List Retinol Serum 31 ingredients
FaceTheory Regenacalm 2% Retinol and Vitamin C Serum S1 23 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
The INKEY List Retinol Serum 31 ingredients
FaceTheory Regenacalm 2% Retinol and Vitamin C Serum S1 23 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Butylene Glycol
Humectant
Propanediol
Solvent
Dicaprylyl Carbonate
EmollientTocopherol
Antioxidant
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingSqualane
Emollient
Polysorbate 60
Emulsifying
Sorbitan Isostearate
Emulsifying
Phenoxyethanol
Preservative
Caprylyl Glycol
EmollientPhospholipids
Skin Conditioning
Glycine Soja Oil
Emollient
Glycolipids
Skin ConditioningGlycine Soja Sterols
Emollient
Retinyl Acetate
Skin Conditioning
Dimethicone
Emollient
Leuconostoc/Radish Root Ferment Filtrate
Antimicrobial
Hyaluronic Acid
Humectant
Dimethyl Isosorbide
SolventHydroxypinacolone Retinoate
Skin Conditioning
Carbomer
Emulsion StabilisingPolysorbate 20
Emulsifying
Palmitoyl Tripeptide-1
Skin Conditioning
Palmitoyl Tetrapeptide-7
Skin Conditioning
Sodium Lactate
BufferingTocopheryl Acetate
Antioxidant
Tetrasodium Glutamate Diacetate
Sodium Hydroxide
BufferingTetrahexyldecyl Ascorbate
Antioxidant
Water, Glycerin, Butylene Glycol, Propanediol, Dicaprylyl Carbonate, Tocopherol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Squalane, Polysorbate 60, Sorbitan Isostearate, Phenoxyethanol, Caprylyl Glycol, Phospholipids, Glycine Soja Oil, Glycolipids, Glycine Soja Sterols, Retinyl Acetate, Dimethicone, Leuconostoc/Radish Root Ferment Filtrate, Hyaluronic Acid, Dimethyl Isosorbide, Hydroxypinacolone Retinoate, Carbomer, Polysorbate 20, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Sodium Lactate, Tocopheryl Acetate, Tetrasodium Glutamate Diacetate, Sodium Hydroxide, Tetrahexyldecyl Ascorbate
Water
Skin ConditioningPropanediol
Solvent
Glycerin
Humectant
Polyglyceryl-4 Oleate
Emulsifying
Retinyl Palmitate
Skin Conditioning
Sodium Ascorbyl Phosphate
Antioxidant
Polyglyceryl-6 Stearate
Emollient
Tocopherol
Antioxidant
Sodium Anisate
AntimicrobialSodium Levulinate
Skin ConditioningGlyceryl Caprylate
EmollientAnethum Graveolens Herb Extract
Perfuming
Glycyrrhiza Glabra Callus Culture Extract
Skin ConditioningCetyl Hydroxyethylcellulose
Emulsion StabilisingLactic Acid
Buffering
Polyglyceryl-6 Behenate
Emulsion Stabilising
Ferulic Acid
Antimicrobial
Xanthan Gum
EmulsifyingSalicylic Acid
Masking
Sodium Hyaluronate
Humectant
Aloe Barbadensis Leaf Juice
Skin Conditioning
Citric Acid
Buffering
Potassium Sorbate
Preservative
Water, Propanediol, Glycerin, Polyglyceryl-4 Oleate, Retinyl Palmitate, Sodium Ascorbyl Phosphate, Polyglyceryl-6 Stearate, Tocopherol, Sodium Anisate, Sodium Levulinate, Glyceryl Caprylate, Anethum Graveolens Herb Extract, Glycyrrhiza Glabra Callus Culture Extract, Cetyl Hydroxyethylcellulose, Lactic Acid, Polyglyceryl-6 Behenate, Ferulic Acid, Xanthan Gum, Salicylic Acid, Sodium Hyaluronate, Aloe Barbadensis Leaf Juice, Citric Acid, Potassium Sorbate
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 GlycerinPropanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolTocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.
Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.
Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.
You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.
There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.
Learn more about TocopherolWater. 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 WaterIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
The INKEY List Retinol Serum 31 ingredients
FaceTheory Regenacalm 2% Retinol and Vitamin C Serum S1 23 ingredients
