Merit Beauty The Uniform Tinted Mineral Sunscreen SPF 45 Versus Undefined Beauty R&R Sun Serum SPF 50 PA++++
What's inside
What's inside
Key Ingredients
Benefits
Ingredients Side-by-side
Zinc Oxide 15.065%
Cosmetic Colorant
Water
Skin ConditioningPropanediol
Solvent
C13-15 Alkane
SolventIsoamyl Laurate
Emollient
Butyloctyl Salicylate
Skin Conditioning
Zea Mays Starch
Absorbent
Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate
Emulsifying
C15-19 Alkane
SolventCoco-Caprylate
Emollient
Polyhydroxystearic Acid
Emulsifying
Magnesium Sulfate
Diglycerin
Humectant
Caprylic/Capric Triglyceride
Masking
Quaternium-90 Bentonite
Hydroxyacetophenone
Antioxidant
Disteardimonium Hectorite
StabilisingLauroyl Lysine
Skin Conditioning
Triethyl Citrate
Masking
Caprylyl Glycol
Emollient
Tocopheryl Acetate
Antioxidant
Sorbitan Isostearate
Emulsifying
Cellulose
Absorbent
Ethylhexylglycerin
Skin ConditioningPolyglycerin-3
Humectant
Polyglycerin-4
HumectantGlycerin
Humectant
Tocopherol
Antioxidant
CI 77891
Cosmetic ColorantCI 77491
Cosmetic ColorantCI 77492
Cosmetic ColorantCI 77499
Cosmetic ColorantZinc Oxide 15.065%, Water, Propanediol, C13-15 Alkane, Isoamyl Laurate, Butyloctyl Salicylate, Zea Mays Starch, Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate, C15-19 Alkane, Coco-Caprylate, Polyhydroxystearic Acid, Magnesium Sulfate, Diglycerin, Caprylic/Capric Triglyceride, Quaternium-90 Bentonite, Hydroxyacetophenone, Disteardimonium Hectorite, Lauroyl Lysine, Triethyl Citrate, Caprylyl Glycol, Tocopheryl Acetate, Sorbitan Isostearate, Cellulose, Ethylhexylglycerin, Polyglycerin-3, Polyglycerin-4, Glycerin, Tocopherol, CI 77891, CI 77491, CI 77492, CI 77499
Water
Skin ConditioningCaprylic/Capric Triglyceride
Masking
C12-15 Alkyl Benzoate
AntimicrobialPropanediol
Solvent
Tridecyl Salicylate
Skin ConditioningPolyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate
Emulsifying
Methylheptyl Isostearate
Skin ConditioningJojoba Esters
Emollient
Niacinamide
Smoothing
Nylon-12
Methylpropanediol
SolventSilica
Abrasive
Rubus Idaeus Seed Oil
Emollient
Tremella Fuciformis Sporocarp Extract
Antioxidant
Allantoin
Skin Conditioning
Bisabolol
Antioxidant
Oryza Sativa Bran Extract
Skin Conditioning
Helianthus Annuus Extract
Emollient
Rosmarinus Officinalis Leaf Extract
AntimicrobialTocopherol
Antioxidant
Coco-Caprylate
Emollient
Caprylyl Glycol
Emollient
Polyglyceryl-2 Dipolyhydroxystearate
Skin Conditioning
Hydrogenated Lecithin
Emulsifying
Lecithin
Emollient
Phenylpropanol
Masking
Sodium Chloride
MaskingTetrasodium Glutamate Diacetate
Sodium Hydroxide
BufferingIron Oxides
Water, Caprylic/Capric Triglyceride, C12-15 Alkyl Benzoate, Propanediol, Tridecyl Salicylate, Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate, Methylheptyl Isostearate, Jojoba Esters, Niacinamide, Nylon-12, Methylpropanediol, Silica, Rubus Idaeus Seed Oil, Tremella Fuciformis Sporocarp Extract, Allantoin, Bisabolol, Oryza Sativa Bran Extract, Helianthus Annuus Extract, Rosmarinus Officinalis Leaf Extract, Tocopherol, Coco-Caprylate, Caprylyl Glycol, Polyglyceryl-2 Dipolyhydroxystearate, Hydrogenated Lecithin, Lecithin, Phenylpropanol, Sodium Chloride, Tetrasodium Glutamate Diacetate, Sodium Hydroxide, 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.
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 TriglycerideCaprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.
Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.
Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).
Learn more about Caprylyl GlycolCoco-Caprylate is a lightweight emollient made by combining coconut-derived fatty alcohols (caprylic and capric acid).
Its primary role in formulas is as a skin-softening emollient with excellent spreadability (it's considered a plant-based alternative to silicone oils like dimethicone).
This ingredient is considered safe for use and concentrations range from 0.5-62%.
Caprylic and capric fall outside the C11-24 range that Malassezia feeds on, and a 2020 study found caprylic acid disrupted Malassezia furfur cell membrane, with a caprylic acid derivative damaging membrane structures at concentrations as low as 0.2%.
Learn more about Coco-CaprylateThis ingredient is a water-in-oil emulsifier and is sometimes known by its trade name, Isolan GPS. It helps create stable emulsions by bridging oil and water phases without adding a greasy feel.
Common usage levels sit between 2-5% for this ingredient.
Propanediol 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 PropanediolTocopherol is a fat-soluble antioxidant known as Vitamin E.
You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells.
Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes.
It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks.
This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage.
This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there.
In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading.
Concentrations usually range from 0.1-1% in most leave-on products.
Learn more about TocopherolWater. 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
