Overview
What they are
These products are both cruelty-free serums. They have a total of 5 ingredients in common
Cool Features
They both contain hyaluronic acid
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, silicones or sulfates
What's Inside
They both contain fragrances
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
Medik8 Liquid Peptides 33 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
Medik8 Liquid Peptides 33 ingredients
Medik8 Crystal Retinal 3 39 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Butylene Glycol
Humectant
Inulin
Skin ConditioningSodium Hyaluronate
Humectant
Panthenol
Skin Conditioning
Alpha-Glucan Oligosaccharide
CleansingCarnosine
Skin ConditioningCarbomer
Emulsion StabilisingPolysorbate 20
Emulsifying
Caprylyl Glycol
EmollientPhenoxyethanol
Preservative
Hydroxypropyl Cyclodextrin
MaskingDunaliella Salina Extract
Skin ConditioningEthylhexylglycerin
Skin ConditioningCitric Acid
Buffering
Palmitoyl Tripeptide-5
Skin Conditioning
Sodium Benzoate
Masking
Acetyl Hexapeptide-8
Humectant
Tetrapeptide-21
Skin Conditioning
Pentapeptide-18
Skin Conditioning
Palmitoyl Tripeptide-1
Skin Conditioning
Pantolactone
HumectantPalmitoyl Tripeptide-38
Skin Conditioning
Palmitoyl Tetrapeptide-7
Skin Conditioning
Glyceryl Caprylate
EmollientLactic Acid/Glycolic Acid Copolymer
Skin ConditioningPolyvinyl Alcohol
Phenylpropanol
Masking
Copper Palmitoyl Heptapeptide-14
Skin Conditioning
Heptapeptide-15 Palmitate
Skin Conditioning
Potassium Sorbate
Preservative
Xanthan Gum
EmulsifyingWater, Glycerin, Butylene Glycol, Inulin, Sodium Hyaluronate, Panthenol, Alpha-Glucan Oligosaccharide, Carnosine, Carbomer, Polysorbate 20, Caprylyl Glycol, Phenoxyethanol, Hydroxypropyl Cyclodextrin, Dunaliella Salina Extract, Ethylhexylglycerin, Citric Acid, Palmitoyl Tripeptide-5, Sodium Benzoate, Acetyl Hexapeptide-8, Tetrapeptide-21, Pentapeptide-18, Palmitoyl Tripeptide-1, Pantolactone, Palmitoyl Tripeptide-38, Palmitoyl Tetrapeptide-7, Glyceryl Caprylate, Lactic Acid/Glycolic Acid Copolymer, Polyvinyl Alcohol, Phenylpropanol, Copper Palmitoyl Heptapeptide-14, Heptapeptide-15 Palmitate, Potassium Sorbate, Xanthan Gum
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.
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 GlycerinSodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.
Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.
These are some other common types of Hyaluronic Acid:
Learn more about Sodium HyaluronatePhenoxyethanol 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.
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
Medik8 Liquid Peptides 33 ingredients
Medik8 Crystal Retinal 3 39 ingredients
Reviews
Here's what our community thinks
Medik8 Liquid Peptides 33 ingredients
It’s water based and firms my skin. My skin loves it. I also like Bare Minerals Herb Serum as it has niacinamide and my skin loves that too. Medik8 Crystal Retinal 3 and 6 also. Elemis pro rad cream wash and dynamic resurf and kefir mist
I love this product. It has become a staple in my routine. It's such a shame they increased the price, but I rotate between this one and the ordinary multipeptide with copper. It's the perfect consistency and it does not get sticky, but it needs to be applied scarcely (around 4 drops). My skin loves this serum and it makes the skin hydrated without creating any excess oil. It does not trigger any Show more
Medik8 Crystal Retinal 3 39 ingredients
It’s amazing, not greasy, absorbs really well and smells of cinnamon.
