What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Centella Asiatica Leaf Water
Skin ConditioningTitanium Dioxide
Cosmetic ColorantCyclopentasiloxane
EmollientEthylhexyl Methoxycinnamate
UV AbsorberCyclohexasiloxane
EmollientButylene Glycol
HumectantZinc Oxide
Cosmetic ColorantPhenyl Trimethicone
Skin ConditioningGlycerin
HumectantNiacinamide
SmoothingDicaprylyl Carbonate
EmollientButylene Glycol Dicaprylate/Dicaprate
EmollientCetyl PEG/PPG-10/1 Dimethicone
EmulsifyingMethyl Methacrylate Crosspolymer
Sodium Chloride
MaskingNelumbo Nucifera Callus Culture Extract
AntimicrobialCoral Powder
AbrasiveHydrolyzed Myrtus Communis Leaf Extract
Skin ProtectingNymphaea Alba Flower Extract
Skin ConditioningThermus Thermophillus Ferment
Skin ConditioningSaccharomyces/Xylinum/Black Tea Ferment
Skin ConditioningZanthoxylum Piperitum Fruit Extract
Skin ConditioningPulsatilla Koreana Extract
Skin ConditioningUsnea Barbata Extract
Pseudoalteromonas Ferment Extract
HumectantCamellia Japonica Flower Extract
EmollientHedera Helix Leaf/Stem Extract
AntimicrobialButyrospermum Parkii Seedcake Extract
Skin ProtectingArgania Spinosa Kernel Extract
Skin ConditioningHelianthus Annuus Seed Extract
Skin ConditioningLaminaria Digitata Extract
Skin ProtectingMourera Fluviatilis Extract
Skin ConditioningAmethyst Powder
AbrasivePearl Powder
Tourmaline
Ficus Carica Fruit Extract
HumectantPunica Granatum Fruit Extract
AntioxidantMorus Alba Fruit Extract
AntioxidantGinkgo Biloba Nut Extract
Skin ConditioningIsoamyl P-Methoxycinnamate
UV AbsorberPentylene Glycol
Skin ConditioningHydrogenated Poly(C6-14 Olefin)
EmollientSorbitan Isostearate
EmulsifyingDisteardimonium Hectorite
StabilisingCetyl Dimethicone
EmollientPolyglyceryl-4 Isostearate
EmulsifyingAluminum Hydroxide
EmollientStearic Acid
CleansingTrihydroxystearin
Skin ConditioningTriethoxycaprylylsilane
Dimethicone
EmollientEthylhexylglycerin
Skin ConditioningAdenosine
Skin ConditioningDipropylene Glycol
HumectantSucrose
HumectantSodium Palmitoyl Proline
Skin ConditioningSerine
MaskingArginine
MaskingPCA
HumectantBiosaccharide Gum-4
Skin ConditioningAlanine
MaskingThreonine
Sodium Polyacrylate
AbsorbentSodium Hyaluronate
HumectantPhytic Acid
PEG-8
HumectantPPG-1-PEG-9 Lauryl Glycol Ether
EmulsifyingSodium Cocoyl Glutamate
CleansingCaprylyl Glycol
Emollient1,2-Hexanediol
Skin ConditioningHydroxyethylcellulose
Emulsion StabilisingXanthan Gum
EmulsifyingCarbomer
Emulsion StabilisingDisodium EDTA
Phenoxyethanol
PreservativeParfum
MaskingCI 77492
Cosmetic ColorantCI 77491
Cosmetic ColorantCI 77499
Cosmetic ColorantCentella Asiatica Leaf Water, Titanium Dioxide, Cyclopentasiloxane, Ethylhexyl Methoxycinnamate, Cyclohexasiloxane, Butylene Glycol, Zinc Oxide, Phenyl Trimethicone, Glycerin, Niacinamide, Dicaprylyl Carbonate, Butylene Glycol Dicaprylate/Dicaprate, Cetyl PEG/PPG-10/1 Dimethicone, Methyl Methacrylate Crosspolymer, Sodium Chloride, Nelumbo Nucifera Callus Culture Extract, Coral Powder, Hydrolyzed Myrtus Communis Leaf Extract, Nymphaea Alba Flower Extract, Thermus Thermophillus Ferment, Saccharomyces/Xylinum/Black Tea Ferment, Zanthoxylum Piperitum Fruit Extract, Pulsatilla Koreana Extract, Usnea Barbata Extract, Pseudoalteromonas Ferment Extract, Camellia Japonica Flower Extract, Hedera Helix Leaf/Stem Extract, Butyrospermum Parkii Seedcake Extract, Argania Spinosa Kernel Extract, Helianthus Annuus Seed Extract, Laminaria Digitata Extract, Mourera Fluviatilis Extract, Amethyst Powder, Pearl Powder, Tourmaline, Ficus Carica Fruit Extract, Punica Granatum Fruit Extract, Morus Alba Fruit Extract, Ginkgo Biloba Nut Extract, Isoamyl P-Methoxycinnamate, Pentylene Glycol, Hydrogenated Poly(C6-14 Olefin), Sorbitan Isostearate, Disteardimonium Hectorite, Cetyl Dimethicone, Polyglyceryl-4 Isostearate, Aluminum Hydroxide, Stearic Acid, Trihydroxystearin, Triethoxycaprylylsilane, Dimethicone, Ethylhexylglycerin, Adenosine, Dipropylene Glycol, Sucrose, Sodium Palmitoyl Proline, Serine, Arginine, PCA, Biosaccharide Gum-4, Alanine, Threonine, Sodium Polyacrylate, Sodium Hyaluronate, Phytic Acid, PEG-8, PPG-1-PEG-9 Lauryl Glycol Ether, Sodium Cocoyl Glutamate, Caprylyl Glycol, 1,2-Hexanediol, Hydroxyethylcellulose, Xanthan Gum, Carbomer, Disodium EDTA, Phenoxyethanol, Parfum, CI 77492, CI 77491, CI 77499
Water
Skin ConditioningCyclopentasiloxane
EmollientCI 77891
Cosmetic ColorantCyclohexasiloxane
EmollientEthylhexyl Methoxycinnamate
UV AbsorberButylene Glycol
HumectantPhenyl Trimethicone
Skin ConditioningButylene Glycol Dicaprylate/Dicaprate
EmollientDicaprylyl Carbonate
EmollientPEG-10 Dimethicone
Skin ConditioningZinc Oxide
Cosmetic ColorantNiacinamide
SmoothingCyclomethicone
EmollientSodium Chloride
MaskingSodium Hyaluronate
HumectantPearl Powder
Amethyst Powder
AbrasiveTourmaline
Diamond Powder
AbrasivePortulaca Oleracea Extract
Skin ConditioningDisteardimonium Hectorite
StabilisingGlycerin
HumectantPentylene Glycol
Skin ConditioningGlyceryl Behenate/Eicosadioate
EmollientSorbitan Isostearate
EmulsifyingCetyl PEG/PPG-10/1 Dimethicone
EmulsifyingTrimethylsiloxysilicate
EmollientMethyl Methacrylate Crosspolymer
Dimethicone Crosspolymer
Emulsion StabilisingAluminum Hydroxide
EmollientStearic Acid
CleansingTriethoxycaprylylsilane
Acrylates/Dimethicone Copolymer
Skin ConditioningDimethicone
EmollientEthylhexylglycerin
Skin ConditioningAdenosine
Skin ConditioningDisodium EDTA
Phenoxyethanol
PreservativeMethylparaben
PreservativeParfum
MaskingButylphenyl Methylpropional
PerfumingBenzyl Benzoate
AntimicrobialBenzyl Salicylate
PerfumingLimonene
PerfumingCitronellol
PerfumingLinalool
PerfumingCI 77492
Cosmetic ColorantCI 77491
Cosmetic ColorantCI 77499
Cosmetic ColorantWater, Cyclopentasiloxane, CI 77891, Cyclohexasiloxane, Ethylhexyl Methoxycinnamate, Butylene Glycol, Phenyl Trimethicone, Butylene Glycol Dicaprylate/Dicaprate, Dicaprylyl Carbonate, PEG-10 Dimethicone, Zinc Oxide, Niacinamide, Cyclomethicone, Sodium Chloride, Sodium Hyaluronate, Pearl Powder, Amethyst Powder, Tourmaline, Diamond Powder, Portulaca Oleracea Extract, Disteardimonium Hectorite, Glycerin, Pentylene Glycol, Glyceryl Behenate/Eicosadioate, Sorbitan Isostearate, Cetyl PEG/PPG-10/1 Dimethicone, Trimethylsiloxysilicate, Methyl Methacrylate Crosspolymer, Dimethicone Crosspolymer, Aluminum Hydroxide, Stearic Acid, Triethoxycaprylylsilane, Acrylates/Dimethicone Copolymer, Dimethicone, Ethylhexylglycerin, Adenosine, Disodium EDTA, Phenoxyethanol, Methylparaben, Parfum, Butylphenyl Methylpropional, Benzyl Benzoate, Benzyl Salicylate, Limonene, Citronellol, Linalool, CI 77492, CI 77491, CI 77499
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.
Adenosine has many benefits when used. These benefits include hydrating the skin, smoothing skin, and reducing wrinkles. Once applied, adenosine increases collagen production. It also helps with improving firmness and tissue repair.
Studies have found adenosine may also help with wound healing.
In skincare products, Adenosine is usually derived from yeast.
Learn more about AdenosineAluminum Hydroxide is a form of aluminum. It can be naturally found in nature as the mineral gibbsite. In cosmetics, Aluminum Hydroxide is used as a colorant, pH adjuster, and absorbent.
As a colorant, Aluminum Hydroxide may add opacity, or reduce the transparency. Aluminum hydroxide is contains both basic and acidic properties.
According to manufacturers, this ingredient is an emollient and humectant. This means it helps hydrate the skin.
In medicine, this ingredient is used to help relieve heartburn and help heal ulcers.
There is currently no credible scientific evidence linking aluminum hydroxide in cosmetics to increased cancer risk.
Major health organizations allow the use of aluminum hydroxide in personal care products and have not flagged it as a carcinogenic risk at typical usage levels.
Learn more about Aluminum HydroxideAmethyst Powder is an exfoliant.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene GlycolThis is a lightweight diester (caprylic/capric acid + butylene glycol) with emollient and skin conditioning properties.
According to a manufacturer, this ingredient can help add a "cushiony" oil phase without making it heavy.
This ingredient is a silicone-based emulsifer that helps the water and oil phases play nicely together. It's so effective because one end of the molecule loves oil and the other one loves water.
Besides holding formulas together, it also leaves a silky and lightweight feel on skin without the greasiness. A manufacturer also claims it can help with the controlled release of active ingredients.
The CIR Expert Panel found this ingredient to not be sensitizing in concentrations up to 15% in human maximazation testing and dimethicone-based compounds were not comedogenic.
It has a high molecular weight well above 1,000 g/mol which means it limits meaningful skin penetration.
A 2019 study specifically tested this ingredient and found no observable Malassezia growth in its presence.
Learn more about Cetyl PEG/PPG-10/1 DimethiconeCi 77491 is also hydrated iron III oxide. It's sole purpose is to give a red/pink hue to products.
Iron III oxides are classified as inorganic chemicals for coloring.
Synthetically created Ci 77491 is considered safer than those naturally found. This is because the synthetically created version may contain less impurities. Iron oxides are generally non-toxic and non-allergenic.
Learn more about CI 77491CI 77492 is also hydrated iron III oxide. It's sole purpose is to give a yellow hue to products.
Iron III oxides are classified as inorganic chemicals for coloring.
Synthetically created CI 77492 is considered safer than those naturally found. This is because the synthetically created version may contain less impurities. Iron oxides are generally non-toxic and non-allergenic.
Learn more about CI 77492Ci 77499 is also hydrated iron III oxide. It is created from mixing red and black iron oxides. This helps give shades of darkness to a product.
Iron III oxides are classified as inorganic chemicals for coloring.
Cyclohexasiloxane is a type of silicone more commonly known as D6. It is an emollient and solvent.
Cyclohexasiloxane is used to evenly distribute ingredients throughout the product. When applied to the skin, Cyclohexasiloxane evaporates and leaves behind a silky feel.
As an emollient, it can help the skin feel soft and hydrated. It is also used to reduce frizz in hair products.
Learn more about CyclohexasiloxaneCyclopentasiloxane, or D5, is a silicone used to improve texture of products and trap moisture.
D5 is considered lightweight and volatile. Volatile means it evaporates quickly after application. Once evaporated, D5 leaves a thin barrier that helps keep skin hydrated.
It is also an emollient. Emollients help soften the skin and prevent water loss. Silicones create a silky texture in products. D5 helps other ingredients become more spreadable.
Studies show D5 is safe to use in skincare products. We recommend speaking with a skincare professional if you have concerns.
Learn more about CyclopentasiloxaneDicaprylyl Carbonate comes from carbonic acid and caprylyl alcohol, a fatty alcohol. It is an emollient and gives skin a velvet feel. The sources of Dicaprylyl Carbonate may be synthetic or from animals.
As an emollient, Dicaprylyl Carbonate creates a film on the skin. This film traps moisture in, keeping your skin soft and hydrated.
Dimethicone is a type of synthetic silicone created from natural materials such as quartz. It is also known as polydimethylsiloxane.
What it does:
Dimethicone comes in different viscosities:
Depending on the viscosity, dimethicone has different properties.
Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.
This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.
Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.
Learn more about DimethiconeDisodium 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 EDTADisteardimonium Hectorite comes from the clay mineral named hectorite. It is used to add thickness to a product.
It can also help stabilize a product by helping to disperse other ingredients.
Hectorite is a rare, white clay mineral.
Learn more about Disteardimonium HectoriteEthylhexyl Methoxycinnamate is an organic compound that provides UVB protection. It often goes by the more common name of octinoxate. It is created from methoxycinnamic acid and 2-ethylhexanol.
Ethylhexyl Methoxycinnamate absorbs UVB rays with wavelengths between 280-320 nm. UV absorbers protect your skin by using chemical reactions to convert UV rays into heat and energy.
UVB (290-320 nm) rays emit more energy than UVA rays. They are capable of damaging DNA, causing sunburns and are thought to be linked to skin cancer.
The state of Hawaii has banned sunscreens containing octinoxate due to its potential impact on coral reefs. More research is needed to bridge gaps in this research. The European Union allows higher levels of octinoxate in sunscreens than the US and Australia.
Ethylhexyl Methoxycinnamate is oil soluble. It is not stable and may lose efficacy when exposed to sunlight.
Learn more about Ethylhexyl MethoxycinnamateEthylhexylglycerin 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 GlycerinThis ingredient comes as a powder made up of small, porous, microbeads. It is used to add a silky feel to products and also helps absorb oil.
Niacinamide 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 NiacinamideParfum is a catch-all term for an ingredient or more that is used to give a scent to products.
Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.
For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.
The term 'parfum' or 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.
For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards.
One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.
Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.
Parfum can also be used to mask or cover an unpleasant scent.
The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.
Learn more about ParfumPearl Powder is made by grinding up fresh-water or salt-water pearls. Pearls are rich in amino-acids, magnesium, potassium, calcium, and antioxidant compounds.
Two antioxidants found in pearls include: superoxide dismutase (SOD) and glutathione. Antioxidants aid in reducing the signs of aging. Gluthatione has been shown to help prevent the melanin creation process, though further research is needed.
Studies show pearls can aid in wound healing.
Pearls are harvested from oysters. To be vegan, an ingredient cannot be from an animal source.
Learn more about Pearl PowderPentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.
The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.
This property also makes Pentylene Glycol a great texture enhancer. It can also help thicken or stabilize a product.
Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.
Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.
Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.
Learn more about Pentylene GlycolPhenoxyethanol 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.
Phenyl Trimethicone is a silicon-based polymer. It is derived from silica.
Phenyl Trimethicone is used as an emollient and prevents products from foaming.
As an emollient, it helps trap moisture in the skin. It is considered an occlusive.
Learn more about Phenyl TrimethiconeChances are, you eat sodium chloride every day. Sodium Chloride is also known as table salt. This ingredient has many purposes in skincare: thickener, emulsifier, and exfoliator.
You'll most likely find this ingredient in cleansers where it is used to create a gel-like texture. As an emulsifier, it also prevents ingredients from separating.
You might see people debate whether Sodium Chloride is comedogenic, but there actually haven't been any comedogenic tests done on it. Either way, the overall formulation of a product matters a lot more than any single ingredient.
You might see this ingredient used in scrubs as a primary exfoliating ingredient.
Learn more about Sodium ChlorideSodium Hyaluronate is the salt form of hyaluronic acid. It is a long sugar chain that is naturally found in your skin, joints, and connective tissue that maintains hydration and elasticity.
In skincare, it works as a humectant. It pulls water from the environment and deeper layers of skin and binds it to the surface.
Interestingly, the size of the molecule affects its behavior:
Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair.
Many serums use a blend of both weights so you can get surface hydration plus longer-lasting and deeper effects.
You'll typically see concentrations between 0.1-2% for this ingredient.
Learn more about Sodium HyaluronateSorbitan Isostearate is an emulsifer and cleaning agent. It is created from isostearic acid and sorbitol.
As an emulsifier, Sorbitan Isostearate prevents oils and water from separating.
Due to its isostearic acid base, it may not be safe for Malassezia or fungal acne.
Learn more about Sorbitan IsostearateStearic Acid is a fatty acid that is already found in your skin. It's one of the free fatty acids that works alongside ceramides and cholesterols to maintain your barrier.
In cosmetics, it is a multitasker:
Safety-wise, the CIR Expert Panel has concluded it to be safe in cosmetics when formulated to be non-irritating and non-sensitizing.
Free stearic acid is a C18 fatty acid that the Malassezia yeast can substrate, so this ingredient may not be fungal acne safe.
Learn more about Stearic AcidWe don't have a description for Tourmaline yet.
Triethoxycaprylylsilane is a silicon-based surface modifier that makes sunscreens feel silky and makeup stay put.
Its main job is to coat mineral particles like titanium dioxide, zinc oxide, and color pigments in a thin, oily layer so they spread smoothly, don't clump, and stick to skin better.
This ingredient is typically used at low levels (up to 2.5% in eyeshadow and 1% in lipstick).
Learn more about TriethoxycaprylylsilaneZinc Oxide is a mineral broad-spectrum UV filter; it is the broadest UVA and UVB reflector approved by the FDA. It also has skin protectant and skin soothing properties.
Zinc oxide is one of the most effective broad-spectrum UV filters. It protects against UVB, UVAII, and UVAI. In comparison to its counterpart titanium dioxide, zinc oxide provides uniform and extended UVA protection.
Another great benefit? This ingredient is highly photostable so it won't degrade easily under sunlight.
A common myth is that mineral UV filters are widely believed to primarily reflect UV light.
However, modern research shows titanium dioxide absorbs UV radiation like chemical filters (~95% absorption & 5% reflection).
Zinc oxide has great skin soothing properties so you'll likely find this in sunscreens formulated for sensitive skin or babies/children. It is unlikely to cause "eye sting" like other sunscreen ingredients.
Regulatory agencies consider zinc oxide to be non-toxic and safe. It has also been shown to not penetrate the skin.
Unfortunately, this ingredient does leave a visible white cast. This is why mineral sunscreens are often less cosmetically elegant than chemical or hybrid ones.
In cosmetics, zinc oxide can be found in both non-nano and nano-sized forms. The nano version is used to reduce white cast and improve the texture of sunscreen formulas.
There are ongoing concerns surrounding nano-zinc oxide's impact on marine ecosystems and whether it can be absorbed into skin.
Regarding marine ecosystems and coral reefs, there is no conclusive evidence that any form of zinc oxide (or any other sunscreen ingredients) will cause harm. The science is still developing but many consumers are keeping a close eye on this issue.
Please note, many destinations have reef-safety sunscreen rules. For instance, the U.S. Virgin Islands advises all visitors to use non-nano mineral sunscreens.
There has also been some stir about whether micronized or nano zinc oxide has potential photoxicity and absorption through the skin/lungs.
An in-vitro (done in a test tube or petri dish) study demonstrated micronized zinc oxide to have potential phototoxicity. There's no need to fret; the EU Commission's Scientific Committee on Consumer Safety has stated, "The relevance of these findings needs to be clarified by appropriate investigations in vivo." Or in other words, further studies done on living organisms are needed to prove this.
Current research shows zinc oxide nanoparticles do not penetrate intact or sunburned skin. They either remain on the surface or in the outermost layer of dead skin (stratum corneum).
Zinc oxide is one of only two classified mineral UV filters with titanium dioxide being the other one.
Fun fact: Zinc has been used throughout history as an ingredient in paint and medicine. An Indian text from 500BC is believed to list zinc oxide as a salve for open wound. The Ancient Greek physician Dioscorides has also mentioned the use of zinc as an ointment in 1AD.
Learn more about Zinc Oxide