Medik8 Crystal Retinal Versus Asap Super A+ Serum
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningCaprylic/Capric Triglyceride
Masking
Glycerin
Humectant
Isododecane
EmollientCetearyl Olivate
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingCetearyl Alcohol
Emollient
PPG-12/Smdi Copolymer
EmollientSorbitan Olivate
Emulsifying
Tocopheryl Acetate
Antioxidant
Cyclodextrin
AbsorbentSqualane
Emollient
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingHydroxyacetophenone
Antioxidant
3-O-Ethyl Ascorbic Acid
Skin Conditioning
Hydroxypropyl Methylcellulose
Emulsion StabilisingSodium Hyaluronate
Humectant
Phenoxyethanol
Preservative
Tetrahexyldecyl Ascorbate
Antioxidant
Daucus Carota Sativa Seed Oil
Emollient
Retinal
Skin Conditioning
Rubus Chamaemorus Seed Oil
Skin Conditioning
Alumina
Abrasive
Isostearic Acid
Cleansing
Lecithin
Emollient
Polyglyceryl-3 Polyricinoleate
Emulsifying
Lonicera Japonica Flower Extract
Skin ConditioningLonicera Caprifolium Flower Extract
Perfuming
Polyhydroxystearic Acid
Emulsifying
Stearic Acid
Cleansing
Sodium Polyaspartate
HumectantPentylene Glycol
Skin Conditioning
Citric Acid
Buffering
Polysorbate 60
Emulsifying
Disodium EDTA
Ethylhexylglycerin
Skin ConditioningBHT
Antioxidant
Sorbitan Isostearate
Emulsifying
Vanilla Planifolia Fruit Extract
Skin Conditioning
Dipteryx Odorata Bean Extract
Masking
Coumarin
Perfuming
CI 14700
Cosmetic ColorantCI 77891
Cosmetic ColorantWater, Caprylic/Capric Triglyceride, Glycerin, Isododecane, Cetearyl Olivate, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Cetearyl Alcohol, PPG-12/Smdi Copolymer, Sorbitan Olivate, Tocopheryl Acetate, Cyclodextrin, Squalane, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Hydroxyacetophenone, 3-O-Ethyl Ascorbic Acid, Hydroxypropyl Methylcellulose, Sodium Hyaluronate, Phenoxyethanol, Tetrahexyldecyl Ascorbate, Daucus Carota Sativa Seed Oil, Retinal, Rubus Chamaemorus Seed Oil, Alumina, Isostearic Acid, Lecithin, Polyglyceryl-3 Polyricinoleate, Lonicera Japonica Flower Extract, Lonicera Caprifolium Flower Extract, Polyhydroxystearic Acid, Stearic Acid, Sodium Polyaspartate, Pentylene Glycol, Citric Acid, Polysorbate 60, Disodium EDTA, Ethylhexylglycerin, BHT, Sorbitan Isostearate, Vanilla Planifolia Fruit Extract, Dipteryx Odorata Bean Extract, Coumarin, CI 14700, CI 77891
Xanthan Gum
EmulsifyingTocopheryl Acetate
Antioxidant
Sodium Hyaluronate Crosspolymer
Humectant
Retinol
Skin Conditioning
Propanediol
Solvent
Phenoxyethanol
Preservative
Lecithin
Emollient
Lactic Acid
Buffering
Hexanoyl Dipeptide-3 Norleucine Acetate
Skin Conditioning
Glyceryl Oleate Citrate
Emulsifying
Glycerin
Humectant
Ethylhexylglycerin
Skin ConditioningEthyl Oleate
Emollient
Disodium EDTA
Citrus Paradisi Peel Oil
Masking
Citrus Aurantium Bergamia Fruit Oil
Masking
Citrus Aurantifolia Oil
Cleansing
Cestrum Latifolium Leaf Extract
Skin ConditioningCaprylyl Glycol
Emollient
Caprylic/Capric Triglyceride
Masking
Camellia Sinensis Leaf Extract
Antimicrobial
Butylene Glycol
Humectant
Water
Skin ConditioningAllantoin
Skin Conditioning
Xanthan Gum, Tocopheryl Acetate, Sodium Hyaluronate Crosspolymer, Retinol, Propanediol, Phenoxyethanol, Lecithin, Lactic Acid, Hexanoyl Dipeptide-3 Norleucine Acetate, Glyceryl Oleate Citrate, Glycerin, Ethylhexylglycerin, Ethyl Oleate, Disodium EDTA, Citrus Paradisi Peel Oil, Citrus Aurantium Bergamia Fruit Oil, Citrus Aurantifolia Oil, Cestrum Latifolium Leaf Extract, Caprylyl Glycol, Caprylic/Capric Triglyceride, Camellia Sinensis Leaf Extract, Butylene Glycol, Water, Allantoin
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Caprylic/Capric Triglyceride (aka MCT Oil) is a lightweight emollient, solvent, and texture enhancer. It is considered a skin-softener by helping to prevent moisture loss.
Though it behaves like an oil, it is not technically one due to its chemical composition. One perk of this ingredient is that it is very stable, resistant to oxidation, and unlikely to go rancid.
In practice, that translates to a long shelf life and a consistently elegant skin feel.
While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this. Just patch test if you have concerns.
Fractionated coconut oil and MCT Oil are both listed as Caprylic/Capric Triglyceride according to INCI. This is because INCI names are based on the ingredient’s final chemical composition and not its marketing name or source.
This ingredient is treated as the gold standard fungal acne safe oil. Even though it is coconut derived, the problematic lauric acid is stripped out.
This leaves just caprylic (C8) and capric (C10) acid. These chain lengths actually trend antifungal; a 2020 study found caprylic acid was enough to disrupt Malassezia furfur cell membrane, with a caprylic acid derivative damaging membrane structures at concentrations as low as 0.2%.
Learn more about Caprylic/Capric TriglycerideDisodium EDTA is a chelating agent. It grabs onto and deactivates metal ions that sneak into your products from water, packaging, or air.
This ingredient mainly works behind the scenes and helps with:
On top of that, this ingredient can counteract the effects of hard water by binding to the minerals in it.
One thing worth knowing is that Disodium EDTA has been shown to be a mild penetration enhancer. It can help other ingredients absorb into skin more effectively which can be a double-edged sword (great for actives, but can also make the active too strong if you have sensitive skin).
Clinical patch testing showed no significant skin irritation at typical use concentrations and minimal dermal absorption.
You'll most likely see this ingredient near the end of an ingredient list. It's typically found in concentrations less than 1%.
Learn more about Disodium EDTAEthylhexylglycerin is created from glycerin. It is a multitasker ingredient that:
The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.
Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.
Learn more about EthylhexylglycerinGlycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
Topically, glycerin does several things at once:
Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.
Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.
This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.
Just know very high concentrations (>40%) can feel tacky in low humidity.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinLecithin is a term for a group of substances found in the cell membranes of plants, animals, and humans. They are made up of phospholipids.
Thanks to its amphiphilic structure (water-loving head and oil-loving tail), it is a true multitasker:
It plays well with most ingredients and is typically used at 0.1-1%. However, concentrations up to 50% have been reported in moisturizers.
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.
Tocopheryl 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 AcetateWater. 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. Remember to stay hydrated!
Learn more about Water
