Updated on June 20, 2024
Overview
What they are
These products are both cruelty-free serums. They have a total of 7 ingredients in common
Cool Features
They both contain retinoid and Vitamin E
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, parabens or sulfates
What's Inside
They both contain oils
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
COSRX Real Fit Retinol Serum 23 ingredients
Medik8 Crystal Retinal 3 39 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
COSRX Real Fit Retinol Serum 23 ingredients
Medik8 Crystal Retinal 3 39 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Calendula Officinalis Extract
Skin ConditioningButylene Glycol
Humectant
Glycerin
Humectant
Helianthus Annuus Seed Oil
Emollient
1,2-Hexanediol
Skin ConditioningPolysorbate 60
Emulsifying
Betaine
Humectant
Dimethicone
Emollient
Cetearyl Alcohol
Emollient
Retinyl Palmitate
Skin Conditioning
Cetearyl Olivate
Panthenol
Skin Conditioning
Arachis Hypogaea Oil
Skin Conditioning
Sorbitan Olivate
Emulsifying
Allantoin
Skin Conditioning
Tocopheryl Acetate
Antioxidant
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingHydroxyethylcellulose
Emulsion StabilisingXanthan Gum
EmulsifyingJuniperus Mexicana Oil
Masking
Ethylhexylglycerin
Skin ConditioningAdenosine
Skin Conditioning
Tocopherol
Antioxidant
Calendula Officinalis Extract, Butylene Glycol, Glycerin, Helianthus Annuus Seed Oil, 1,2-Hexanediol, Polysorbate 60, Betaine, Dimethicone, Cetearyl Alcohol, Retinyl Palmitate, Cetearyl Olivate, Panthenol, Arachis Hypogaea Oil, Sorbitan Olivate, Allantoin, Tocopheryl Acetate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Hydroxyethylcellulose, Xanthan Gum, Juniperus Mexicana Oil, Ethylhexylglycerin, Adenosine, Tocopherol
Water
Skin ConditioningCaprylic/Capric Triglyceride
MaskingGlycerin
Humectant
Isododecane
EmollientCyclodextrin
AbsorbentCetearyl Alcohol
Emollient
Cetearyl Olivate
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingSorbitan Olivate
Emulsifying
Tocopheryl Acetate
Antioxidant
Squalane
Emollient
Sodium Hyaluronate
Humectant
Retinal
Skin Conditioning
3-O-Ethyl Ascorbic Acid
Skin Conditioning
Daucus Carota Sativa Seed Oil
Emollient
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingEthylhexylglycerin
Skin ConditioningPentylene Glycol
Skin ConditioningVanilla Planifolia Fruit Extract
Skin ConditioningHydroxypropyl Methylcellulose
Emulsion StabilisingRubus Chamaemorus Seed Oil
Skin Conditioning
Sodium Polyaspartate
HumectantTetrahexyldecyl Ascorbate
Antioxidant
Dipteryx Odorata Bean Extract
Masking
BHT
Antioxidant
Polyhydroxystearic Acid
Emulsifying
Disodium EDTA
Hydroxyacetophenone
Antioxidant
Titanium Dioxide
Cosmetic Colorant
Phenoxyethanol
Preservative
Alumina
Abrasive
Lonicera Caprifolium Flower Extract
Perfuming
Isostearic Acid
Cleansing
Lecithin
EmollientLonicera Japonica Flower Extract
Skin ConditioningPolyglyceryl-3 Polyricinoleate
Emulsifying
Stearic Acid
Cleansing
Coumarin
Perfuming
CI 14700
Cosmetic ColorantWater, Caprylic/Capric Triglyceride, Glycerin, Isododecane, Cyclodextrin, Cetearyl Alcohol, Cetearyl Olivate, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sorbitan Olivate, Tocopheryl Acetate, Squalane, Sodium Hyaluronate, Retinal, 3-O-Ethyl Ascorbic Acid, Daucus Carota Sativa Seed Oil, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Ethylhexylglycerin, Pentylene Glycol, Vanilla Planifolia Fruit Extract, Hydroxypropyl Methylcellulose, Rubus Chamaemorus Seed Oil, Sodium Polyaspartate, Tetrahexyldecyl Ascorbate, Dipteryx Odorata Bean Extract, BHT, Polyhydroxystearic Acid, Disodium EDTA, Hydroxyacetophenone, Titanium Dioxide, Phenoxyethanol, Alumina, Lonicera Caprifolium Flower Extract, Isostearic Acid, Lecithin, Lonicera Japonica Flower Extract, Polyglyceryl-3 Polyricinoleate, Stearic Acid, Coumarin, CI 14700
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 GlycerinCetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.
Cetearyl alcohol is an emollient. Emollients help soothe and hydrate the skin by trapping moisture.
Studies show Cetearyl alcohol is non-toxic and non-irritating. The FDA allows products labeled "alcohol-free" to have fatty alcohols.
This ingredient is usually derived from plant oils such as palm, vegetable, or coconut oils. There is debate on whether this ingredient will cause acne.
Due to the fatty acid base, this ingredient may not be Malassezia folliculitis safe.
Learn more about Cetearyl AlcoholCetearyl Olivate is an emulsifier and texture enhancer. It is derived from the fatty acids of olive oil and Cetearyl alcohol, and is biodegradable.
As an emulsifier, it is used to prevent oils and waters from separating. It can also
Manufacturers use the name Olivem 1000. This ingredient has been found to preserve the natural microbiome of skin. Having a healthy microbiome helps keep our skin healthy and protects against harmful bacteria. This ingredient is grouped with Sorbitan Olivate under the name Olivem 1000.
Learn more about Cetearyl OlivateSorbitan Olivate is created from the fatty acids in olive oil and sorbitol.
This ingredient is an oil in water emulsifier. It helps stabilize a product by preventing oils and waters from separating. Sorbitan Olivate also helps hydrate the skin.
Manufacturers sell sorbitan olivate under the name OliveM 1000. OliveM 1000 a multifunctional ingredient. It is self-emulsifying. According to a manufacturer, OliveM 1000 does not disrupt natural skin biome.
Due to its olive oil base, this ingredient may not be fungal-acne safe.
Learn more about Sorbitan OlivateTocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.
One study found using Tocopheryl Acetate with Vitamin C decreased the number of sunburned cells.
Tocopheryl Acetate is commonly found in both skincare and dietary supplements.
Learn more about Tocopheryl AcetateThis 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.
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.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
COSRX Real Fit Retinol Serum 23 ingredients
Medik8 Crystal Retinal 3 39 ingredients
Reviews
Here's what our community thinks
COSRX Real Fit Retinol Serum 23 ingredients
Medik8 Crystal Retinal 3 39 ingredients
It’s amazing, not greasy, absorbs really well and smells of cinnamon.
