NARS Cosmetics Natural Matte Longwear Foundation Versus Kosas Revealer Skin-Improving Foundation SPF 25
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningHydrogenated Polyisobutene
EmollientSilica
AbrasiveTrimethylsiloxysilicate
EmollientUndecane
EmollientC9-12 Alkane
SolventEthylhexyl Olivate
Skin ConditioningPropanediol
SolventPolymethylsilsesquioxane
Polyglyceryl-3 Diisostearate
EmulsifyingGlycerin
HumectantDipeptide-15
Skin ConditioningTridecane
PerfumingLauroyl Lysine
Skin ConditioningPolyglyceryl-6 Polyricinoleate
EmulsifyingSea Salt
AbrasiveChlorella Vulgaris Extract
Skin ConditioningDisteardimonium Hectorite
StabilisingStearic Acid
CleansingAluminum Hydroxide
EmollientCoco-Caprylate/Caprate
EmollientSqualane
EmollientNiacinamide
SmoothingSodium Dilauramidoglutamide Lysine
HumectantMagnesium Chloride
Tocopherol
AntioxidantLecithin
EmollientLactic Acid
BufferingPhenoxyethanol
PreservativeTitanium Dioxide
Cosmetic ColorantCI 77491
Cosmetic ColorantCI 77492
Cosmetic ColorantCI 77499
Cosmetic ColorantWater, Hydrogenated Polyisobutene, Silica, Trimethylsiloxysilicate, Undecane, C9-12 Alkane, Ethylhexyl Olivate, Propanediol, Polymethylsilsesquioxane, Polyglyceryl-3 Diisostearate, Glycerin, Dipeptide-15, Tridecane, Lauroyl Lysine, Polyglyceryl-6 Polyricinoleate, Sea Salt, Chlorella Vulgaris Extract, Disteardimonium Hectorite, Stearic Acid, Aluminum Hydroxide, Coco-Caprylate/Caprate, Squalane, Niacinamide, Sodium Dilauramidoglutamide Lysine, Magnesium Chloride, Tocopherol, Lecithin, Lactic Acid, Phenoxyethanol, Titanium Dioxide, CI 77491, CI 77492, CI 77499
Zinc Oxide 7.5%
Cosmetic ColorantWater
Skin ConditioningEthylhexyl Olivate
Skin ConditioningOctyldodecanol
EmollientUndecane
EmollientPolyglyceryl-2 Dipolyhydroxystearate
Skin ConditioningGlycerin
HumectantMica
Cosmetic ColorantCalcium Sodium Borosilicate
Caprylic/Capric Triglyceride
MaskingNiacinamide
SmoothingPolyglyceryl-3 Diisostearate
EmulsifyingGalactoarabinan
Tridecane
PerfumingPropanediol
SolventCetyl Alcohol
EmollientGlyceryl Oleate
EmollientSodium Hyaluronate
HumectantPalmitoyl Tripeptide-5
Skin ConditioningPanthenol
Skin ConditioningSqualane
EmollientCaffeine
Skin ConditioningArnica Montana Flower Extract
MaskingArtemisia Capillaris Flower Extract
Skin ConditioningEthyl Ferulate
AntioxidantSodium Gluconate
Skin ConditioningPolyhydroxystearic Acid
EmulsifyingMaltodextrin
AbsorbentPentylene Glycol
Skin ConditioningLecithin
EmollientHydrogenated Lecithin
EmulsifyingTocopherol
AntioxidantPhenethyl Alcohol
MaskingCI 77891
Cosmetic ColorantIron Oxides
Zinc Oxide 7.5%, Water, Ethylhexyl Olivate, Octyldodecanol, Undecane, Polyglyceryl-2 Dipolyhydroxystearate, Glycerin, Mica, Calcium Sodium Borosilicate, Caprylic/Capric Triglyceride, Niacinamide, Polyglyceryl-3 Diisostearate, Galactoarabinan, Tridecane, Propanediol, Cetyl Alcohol, Glyceryl Oleate, Sodium Hyaluronate, Palmitoyl Tripeptide-5, Panthenol, Squalane, Caffeine, Arnica Montana Flower Extract, Artemisia Capillaris Flower Extract, Ethyl Ferulate, Sodium Gluconate, Polyhydroxystearic Acid, Maltodextrin, Pentylene Glycol, Lecithin, Hydrogenated Lecithin, Tocopherol, Phenethyl Alcohol, CI 77891, Iron Oxides
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Ethylhexyl Olivate isn't fungal acne safe.
Glycerin (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.
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 causes fungal acne.
We recommend reaching out to the brand you are purchasing from to inquire about the source of their lecithin.
Learn more about LecithinNiacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.
And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.
You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.
In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.
If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.
In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).
Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin.
Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.
The type of niacinamide used in skincare is synthetically created.
Learn more about NiacinamidePolyglyceryl-3 Diisostearate is an emulsifer and emollient. It comes from Isostearic Acid and Polyglycerin-3.
As an emulsifier, it helps stabilize products by preventing oils and water from separating.
This ingredient may not be Malassezia folliculitis, or fungal acne safe.
Learn more about Polyglyceryl-3 DiisostearatePropanediol 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 PropanediolSqualane is the hydrogenated and shelf-stable form of squalene (a lipid that naturally occurs in human sebum).
It is an emollient and skin conditioning agent that is able to integrate seamlessly into the skin's lipid barrier without clogging pores.
This is due to how structurally similar it is to what your skin already produces.
Though it is mostly an emollient that helps soften and hydrate skin, it also has some humectant and occlusive action. Humectants help the skin retain moisture while occlusives seal it in, making squalane a triple-threat moisturizer.
Research shows it has antioxidant capabilities that help protect against stressors like UV exposure, specifically UVA induced oxidative stress. This study also found that it supports collagen biosynthesis in human dermal fibroblasts.
No clinical study has reported significant adverse effects and irritation reactions are very rare from this ingredient (even at 100% concentration).
Overall, it's a fantastic ingredient for hydration and is suitable for all skin types.
This depends on the source. Squalane can be derived from both plants and animals. Most squalane used in skincare comes from plants.
Please note: the source of squalane is only known if disclosed by the brand. We recommend reaching out to the brand if you have any questions about their squalane.
Read more about squalene with an "e".
Though squalane is often called an oil, it’s technically not one. It is a hydrocarbon, meaning it is only made of carbon and hydrogen. True oils are triglycerides and made of fatty acids and glycerol.
The term “oil-free” isn’t regulated so companies can define it however they want. Some exclude all oils, while others just avoid mineral oil or comedogenic oils.
Squalane has a comedogenic rating of 1 from the original 1972 study that tested raw ingredients under occlusion on rabbit ears. This system is not standardized or peer-reviewed, and using the raw ingredients is very different from how diluted cosmetic formulations are used on human skin.
A comedogenic rating of 1 means it is "unlikely to clog pores" according to the original rating system.
The overall formula of a product matters more than the individual ingredients on whether or not it will cause clogged pores.
Learn more about SqualaneTocopherol (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 TocopherolTridecane is a lightweight emollient and fragrancing ingredient. It is a paraffin and often called a silicone alternative.
According to official INCI guidelines, this ingredient is used to give a light odor to raw materials. It is often used as a starter ingredient to create parfum.
This ingredient can be derived from palm oil, or coconut oil. It is also naturally found in certain species of organisms.
According to the NOAA, this ingredient can cause skin sensitivity with prolonged use. However, this warning is taken from the Coast Guard and no studies have been done on this in relation to cosmetics.
Tridecane is not water soluble.
Learn more about TridecaneUndecane is an emollient and helps create a lightweight base for products.
Is is not soluble in water and naturally occurring in some species.
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. Remember to stay hydrated!
Learn more about Water