SkinCity Skincare Multi-Action Serum Versus Niod Copper Amino Isolate Serum 2:1 (CAIS2)
Updated on December 27, 2023
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 11 ingredients in common
Cool Features
They both contain peptides
Suited For
They're both likely to be good for dry skin, brightening skin, sensitive skin, scar healing and dark spots
Free From
They both do not contain any common allergens, oils, 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
SkinCity Skincare Multi-Action Serum 43 ingredients
Niod Copper Amino Isolate Serum 2:1 (CAIS2) 26 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
SkinCity Skincare Multi-Action Serum 43 ingredients
Niod Copper Amino Isolate Serum 2:1 (CAIS2) 26 ingredients
Key Ingredients
Benefits
Concerns
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Butylene Glycol
Humectant
Dimethicone/Vinyl Dimethicone Crosspolymer
Skin Conditioning
Isohexadecane
EmollientHydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingPhenoxyethanol
Preservative
Polysorbate 20
Emulsifying
Isopropyl Palmitate
Emollient
Glycyrrhiza Uralensis Root Extract
Skin Conditioning
Silica
Abrasive
Xanthan Gum
EmulsifyingAlcohol
Antimicrobial
Hesperidin Methyl Chalcone
Antioxidant
Ethylene/Propylene/Styrene Copolymer
Caulerpa Lentillifera Extract
Ethylhexylglycerin
Skin ConditioningHydrolyzed Hyaluronic Acid
Humectant
Lecithin
Emollient
Dipotassium Glycyrrhizate
Humectant
Steareth-20
CleansingPolysorbate 60
Emulsifying
Sorbitan Isostearate
Emulsifying
Polygonum Bistorta Root Extract
Skin ConditioningButylene/Ethylene/Styrene Copolymer
Carbomer
Emulsion StabilisingSodium Lactate
BufferingSodium Hyaluronate
Humectant
Sodium Benzoate
Masking
Sodium Citrate
BufferingPotassium Sorbate
Preservative
Palmitoyl Tripeptide-5
Skin Conditioning
Citric Acid
Buffering
Acetyl Hexapeptide-1
Skin Conditioning
Dipeptide-2
Skin Conditioning
Caprylyl Glycol
EmollientTripeptide-1
Skin Conditioning
Hydroxypropyl Cyclodextrin
MaskingPalmitoyl Tetrapeptide-7
Skin Conditioning
Tetrapeptide-30
Skin Conditioning
Acetyl Hexapeptide-8
Humectant
Palmitoyl Tripeptide-1
Skin Conditioning
Palmitoyl Tripeptide-38
Skin Conditioning
Water, Glycerin, Butylene Glycol, Dimethicone/Vinyl Dimethicone Crosspolymer, Isohexadecane, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Phenoxyethanol, Polysorbate 20, Isopropyl Palmitate, Glycyrrhiza Uralensis Root Extract, Silica, Xanthan Gum, Alcohol, Hesperidin Methyl Chalcone, Ethylene/Propylene/Styrene Copolymer, Caulerpa Lentillifera Extract, Ethylhexylglycerin, Hydrolyzed Hyaluronic Acid, Lecithin, Dipotassium Glycyrrhizate, Steareth-20, Polysorbate 60, Sorbitan Isostearate, Polygonum Bistorta Root Extract, Butylene/Ethylene/Styrene Copolymer, Carbomer, Sodium Lactate, Sodium Hyaluronate, Sodium Benzoate, Sodium Citrate, Potassium Sorbate, Palmitoyl Tripeptide-5, Citric Acid, Acetyl Hexapeptide-1, Dipeptide-2, Caprylyl Glycol, Tripeptide-1, Hydroxypropyl Cyclodextrin, Palmitoyl Tetrapeptide-7, Tetrapeptide-30, Acetyl Hexapeptide-8, Palmitoyl Tripeptide-1, Palmitoyl Tripeptide-38
Water
Skin ConditioningLactococcus Ferment Lysate
Skin ConditioningGlycerin
Humectant
Ethyl Linoleate
Emollient
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingHexanoyl Dipeptide-3 Norleucine Acetate
Skin Conditioning
Myristoyl Nonapeptide-3
Skin Conditioning
Yeast Extract
Skin Conditioning
Soy Amino Acids
Skin ConditioningBisabolol
Masking
Pseudoalteromonas Exopolysaccharides
Skin ConditioningLecithin
Emollient
Sorbitan Isostearate
Emulsifying
Isohexadecane
EmollientPolysorbate 60
Emulsifying
Polyacrylate Crosspolymer-6
Emulsion StabilisingTrisodium Ethylenediamine Disuccinate
Sodium Salicylate
Preservative
Citric Acid
Buffering
Sodium Chloride
Masking
Potassium Sorbate
Preservative
Sodium Benzoate
Masking
Pentylene Glycol
Skin ConditioningEthoxydiglycol
HumectantPhenoxyethanol
Preservative
Chlorphenesin
Antimicrobial
Water, Lactococcus Ferment Lysate, Glycerin, Ethyl Linoleate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Hexanoyl Dipeptide-3 Norleucine Acetate, Myristoyl Nonapeptide-3, Yeast Extract, Soy Amino Acids, Bisabolol, Pseudoalteromonas Exopolysaccharides, Lecithin, Sorbitan Isostearate, Isohexadecane, Polysorbate 60, Polyacrylate Crosspolymer-6, Trisodium Ethylenediamine Disuccinate, Sodium Salicylate, Citric Acid, Sodium Chloride, Potassium Sorbate, Sodium Benzoate, Pentylene Glycol, Ethoxydiglycol, Phenoxyethanol, Chlorphenesin
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Citric 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 AcidGlycerin 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 GlycerinThis is a synthetic polymer. It helps improve the texture of products by adding thickness and gel-like feel.
It is also an emulsifer, meaning it prevents ingredients such as oil and water from separating. It also helps evenly disperse other ingredients.
Isohexadecane is added to enhance texture, emulsify, and to help cleanse. It is an isoparrafin. It is a component of petrolatum.
Due to its large size, Isohexadecane is not absorbed by the skin. Instead, it sits on top and acts as an emollient. Emollients help keep your skin soft and smooth by trapping moisture within.
Isohexadecane is often used in products designed to help oily skin. It is lightweight and non-greasy while helping to moisturize. When mixed with silicones, it gives a product a silky feel.
Learn more about IsohexadecaneLecithin is a term for a group of substances found in the cell membranes of plants, animals, and humans. They are made up of mixture of phospholipids.
This ingredient has emollient and emulsifying properties.
As an emollient, lecithen helps soften the skin and creates a barrier to keep moisture in.
As an emulsifier, it also helps prevent water and oil ingredients from separating. Lecithin can also help ingredients be better absorbed by the skin.
This is because the phospholipids in lecithin produce liposomes. Liposomes help other ingredients get through the skin barrier.
Depending on the source of this ingredient, lecithin may not be fungal acne safe. This is because some sources of lecithin come from soybean oil, which may feed the malassezia yeast that feeds fungal acne.
We recommend reaching out to the brand you are purchasing from to inquire about the source of their lecithin.
Learn more about LecithinPhenoxyethanol 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.
Polysorbate 60 is used to help stabilize products. It is a surfactant and emulsifier. These properties help keep ingredients together in a product. Surfactants help reduce surface tension between ingredients with different states, such as liquids and solids. Emulsifiers help prevent oils and waters from separating.
Polysorbate 60 is sorbitol-based and created from the ethoxylation of sorbitan. Ethoxylation is a chemical reaction used to add ethylene oxide. Sorbitan is a the dehydrated version of sorbitol, a sugar found in fruits.
In this case, the 60 comes from reacting 60 units of ethylene oxide with sorbitan.
Polysorbates are commonly used in medicine and foods.
Learn more about Polysorbate 60Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.
This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.
Both potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.
You'll often find this ingredient used with other preservatives.
Learn more about Potassium SorbateSodium 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.
It 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 BenzoateSorbitan 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 IsostearateWater. 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
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