Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

Charlotte Tilbury Magic Foundation Versus IMAGE skincare Flawless Foundation

Charlotte Tilbury Magic Foundation Versus IMAGE skincare Flawless Foundation What's inside Key Ingredients Benefits Concerns Ingredients Side-by-side Water Cyclopentasiloxane Cyclohexasiloxane Talc Cetyl PEG/PPG-10/1 Dimethicone Titanium Dioxide Glycerin Nylon

Charlotte Tilbury Magic Foundation Versus IMAGE skincare Flawless Foundation

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Cyclopentasiloxane

Cyclohexasiloxane

Talc

Cetyl PEG/PPG-10/1 Dimethicone

Titanium Dioxide

Glycerin

Nylon-12

Hdi/Trimethylol Hexyllactone Crosspolymer

Zinc Oxide

Acrylates/Dimethicone Copolymer

Phenoxyethanol

Benzyl Alcohol

Sodium Chloride

Magnesium Sulfate

Hydrogen Dimethicone

Sodium Dehydroacetate

Alumina

Disteardimonium Hectorite

Dehydroacetic Acid

Potassium Sorbate

Benzoic Acid

Dimethicone

Tetrasodium EDTA

Tocopheryl Acetate

Aluminum Hydroxide

Triethoxycaprylylsilane

Ascorbyl Tetraisopalmitate

Propylene Carbonate

Sodium Hyaluronate

Butylene Glycol

Silica

Ethylhexylglycerin

Fomes Officinalis Extract

PEG-40 Hydrogenated Castor Oil

CI 77891

Iron Oxides

Water, Cyclopentasiloxane, Cyclohexasiloxane, Talc, Cetyl PEG/PPG-10/1 Dimethicone, Titanium Dioxide, Glycerin, Nylon-12, Hdi/Trimethylol Hexyllactone Crosspolymer, Zinc Oxide, Acrylates/Dimethicone Copolymer, Phenoxyethanol, Benzyl Alcohol, Sodium Chloride, Magnesium Sulfate, Hydrogen Dimethicone, Sodium Dehydroacetate, Alumina, Disteardimonium Hectorite, Dehydroacetic Acid, Potassium Sorbate, Benzoic Acid, Dimethicone, Tetrasodium EDTA, Tocopheryl Acetate, Aluminum Hydroxide, Triethoxycaprylylsilane, Ascorbyl Tetraisopalmitate, Propylene Carbonate, Sodium Hyaluronate, Butylene Glycol, Silica, Ethylhexylglycerin, Fomes Officinalis Extract, PEG-40 Hydrogenated Castor Oil, CI 77891, Iron Oxides

Zinc Oxide 8.5%

Titanium Dioxide 11.5%

Coconut Alkanes

Squalane

Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate

CI 77163

Isohexadecane

Polyglyceryl-4 Isostearate

Vinyl Dimethicone/Lauryl Dimethicone Crosspolymer

Methicone

Hexyl Laurate

Hydroxypropylcocoate PEG-8 Dimethicone

Dipotassium Glycyrrhizate

Perfluorodecalin

Zinc PCA

Saccharomyces Lysate Extract

Centella Asiatica Extract

Olea Europaea Leaf Extract

Algae Extract

Artemisia Vulgaris Extract

Isomalt

Phospholipids

Cyperus Rotundus Root Extract

Lonicera Japonica Flower Extract

Xanthium Sibiricum Fruit Extract

Retinyl Palmitate

Ascorbyl Palmitate

Opuntia Ficus-Indica Stem Extract

Tocopherol

Sodium Benzoate

Beta-Carotene

Salicylic Acid

Acetyl Hexapeptide-8

Sorbic Acid

Lecithin

Vitis Vinifera Fruit Cell Extract

Ergothioneine

Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone

Mica

Coco-Caprylate/Caprate

Polyhydroxystearic Acid

Dimethicone/PEG-10/15 Crosspolymer

Caprylyl Glycol

Zinc Oxide 8.5%, Titanium Dioxide 11.5%, Water, Coconut Alkanes, Dimethicone, Squalane, Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate, CI 77163, Silica, Glycerin, Isohexadecane, Polyglyceryl-4 Isostearate, Vinyl Dimethicone/Lauryl Dimethicone Crosspolymer, Methicone, Cyclopentasiloxane, Cetyl PEG/PPG-10/1 Dimethicone, Hexyl Laurate, Hydroxypropylcocoate PEG-8 Dimethicone, Dipotassium Glycyrrhizate, Perfluorodecalin, Zinc PCA, Saccharomyces Lysate Extract, Centella Asiatica Extract, Olea Europaea Leaf Extract, Algae Extract, Artemisia Vulgaris Extract, Sodium Hyaluronate, Isomalt, Phospholipids, Cyperus Rotundus Root Extract, Lonicera Japonica Flower Extract, Xanthium Sibiricum Fruit Extract, Retinyl Palmitate, Ascorbyl Palmitate, Opuntia Ficus-Indica Stem Extract, Tocopherol, Sodium Benzoate, Beta-Carotene, Potassium Sorbate, Salicylic Acid, Acetyl Hexapeptide-8, Sorbic Acid, Lecithin, Vitis Vinifera Fruit Cell Extract, Ergothioneine, Cyclohexasiloxane, Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone, Mica, Alumina, Coco-Caprylate/Caprate, Phenoxyethanol, Polyhydroxystearic Acid, Dimethicone/PEG-10/15 Crosspolymer, Magnesium Sulfate, Caprylyl Glycol, Ethylhexylglycerin, Iron Oxides

Alternatives

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Alumina (aka aluminum oxide) is an inorganic mineral powder refined from bauxite that works as a quiet workhorse in a formula.

It shows up often as an abrasive, absorbent, anticaking, bulking, and viscosity-controlling agent.

One of its most common jobs is acting as a pigment carrier and dispersant.

Alumina platelets are often blended with inorganic sunscreens like Titanium Dioxide (or with colorants) and then coated with a silicone such as Triethoxycaprylylsilane so the pigment spreads evenly and smoothly.

In makeup, it can also double as a light-diffusing powder or oil absorber to keep formulas from looking greasy.

The Cosmetic Ingredient Review Expert Panel has concluded alumina to be safe in present practices of use and concentration.

They note it's a stable, oxidized compound and scientific research has failed to establish links to health issues.

Concentrations vary depending on the product:

This ingredient is a silicone-based emulsifer that helps the water and oil phases play nicely together.

It's pretty 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.

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.

Cyclopentasiloxane (D5) is a lightweight silicone that mostly acts as an emollient and solvent in cosmetics. Its the reason your products feel silky, fast-spreading, and non-greasy.

Since D5 is volatile, it does its thing and then evaporates off the skin quickly.

The safety profile of this ingredient is reassuring; the US CIR Expert Panel concluded D5 is safe as used in cosmetics and Health Canada concluded that D5 is not harmful to human health or the environment as currently used in cosmetics

There's a study that people mention about D5 in a rat study showing tumors. This study is related to long-term inhalation of high D5 levels.

Regulatory bodies have judged this study to be not applicable in topical skincare since skin absorption of D5 is very low and we're not really inhaling huge amounts of D5.

The only restriction for this ingredient is environmental. The European Chemicals Agency (ECHA) restricted D5 in wash-off cosmetics at or above 0.1% due to their persistence in water.

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.

Ethylhexylglycerin 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.

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.

Magnesium Sulfate is a salt. More specifically, it is an epsom salt, or the bath salt used to help relieve muscle aches.

Despite having ‘sulfate’ in the name, it isn’t a surfactant or cleansing agent like sodium lauryl sulfate. Unlike those sulfates, magnesium sulfate doesn’t have the same cleansing or foaming properties (it's simply a type of salt).

In cosmetics, Magnesium Sulfate is used to thicken a product or help dilute other solids. It is a non-reactive and non-irritating ingredient.

One study shows magnesium deficiency may lead to inflammation of the skin. Applying magnesium topically may help reduce inflammation.

You can find this ingredient in sea water or mineral deposits.

Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).

It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.

On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.

Another perk of this ingredient is that it stays functional across a wide pH range (3-10).

You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.

Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.

Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.

Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.

Both potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.

You'll often find this ingredient used with other preservatives.

Silica, also known as silicon dioxide, is a naturally occurring mineral. It is used as a fine, spherical, and porous powder in cosmetics.

Though it has exfoliant properties, the function of silica varies depending on the product.

The unique structure of silica enhances the spreadability and adds smoothness, making it a great texture enhancer.

It is also used as an active carrier, emulsifier, and mattifier due to its ability to absorb excess oil.

In some products, tiny microneedles called spicules are made from silica or hydrolyzed sponge. When you rub them in, they lightly polish away dead skin layers and enhance the penetration of active ingredients.

Sodium 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.

Titanium Dioxide (TD) is a mineral UV filter widely used in sunscreens and cosmetics.

It's one of only two UV filters officially classified as "mineral" by regulatory agencies (the other being Zinc Oxide).

A really common myth is that mineral filters work by reflecting UV light off your skin like tiny mirrors.

They don't only do that; modern research shows TD protects mostly by absorbing UV radiation, the same way chemical filters do.

When researchers measured this, reflection accounted for only about 4-5% of the protection (and less than SPF 2 on its own). The other ~95% comes from absorption: the UV photons hit the particle and their energy gets soaked up by its semiconductor band gap rather than bouncing off.

So "reflects vs. absorbs" was never really the right way to split mineral from chemical filters.

TD gives broad-spectrum protection that's strongest in the UVB and UVA-2 range and weaker in the UVA-1 range. Its UVA protection isn't quite as strong as Zinc Oxide's which is why you'll often see the two paired together.

Together, they make a solid broad-spectrum system.

TD is a great pick for sensitive, acne-prone, or redness-prone skin because it's non-irritating and chemically inert. Regulatory reviews classify it as a non-sensitizer and mild-to-non-irritant.

It's also unlikely to cause the "eye sting" some chemical filters are known for.

The main trade-off is cosmetic; TD can leave a white cast and has a thicker texture. This is why mineral sunscreens are often less cosmetically elegant than chemical or hybrid formulas (and harder to shade-match on deeper skin tones).

Formulators often use micronized or nano-sized TD to cut down on white case and improve spreadability. Smaller particles scatter less visible light so the formula looks less chalky while still filtering UV.

TD is almost always bundled with coatings like Alumina, Silica, Stearic Acid, or Dimethicone. These coatings do two important jobs:

TD can be used at up to 25% in a finished sunscreen; this is the regulatory ceiling in both the US and the EU.

In practice, the amount in any given product varies a lot depending on the target SPF and whether it's paired with other UV filters.

TD is one of the most heavily vetted sunscreen ingredients out there. It is approved as a UV filter in all major markets worldwide, including the US, EU, UK, Japan, Korea, China, Australia, and Canada.

The safety evidence is solid. There was an old worry that nano particles might absorb through skin into the body but multiple studies (including on damaged, sunburned, and UV-irradiated skin) have shown that TD stays on the surface and the layer of dead skin cells on top of everything else.

There's also no evidence of carcinogenicity, mutagenicity, or reproductive toxicity from dermal exposure of this ingredient.

For those who have seen the headline about a 2022 EU ban on TD, that was on TD as a food additive (a complete separate use from topical sunscreen).

There are ongoing questions about how nano-TD might affect marine ecosystems. As of now, there has been no conclusive evidence that any form of TD (or any other sunscreen filter) harms coral reefs or marine life.

The science is still developing and it's a space worth watching rather than packing over.

However, several destinations have reef-safety sunscreen rules that restrict certain chemical filters and steer visitors toward mineral, non-nano options. If you're traveling somewhere with these rules, a non-nano mineral sunscreen is the safe bet.

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!

Zinc Oxide (ZO) is a mineral broad-spectrum UV filter and the broadest-spectrum filter recognized by the FDA. It covers everything from UVB through to long-wave UVA.

On top of sun protection, it has skin protectant and skin-soothing properties too.

Here's a myth worth busting: mineral filters are usually described as working by "reflecting" or "bouncing" UV off your skin.

That's mostly not true: when researchers actually measured it, ZO and Titanium Dioxide reflect only about 4-5% of UV (less than SPF 2 worth of protection).

The vast majority of the work (~95%) is done by absorption, similar to chemical UV filters. ZO is a semiconductor that absorbs UV photos through its energy band gap.

So the old "physical blocker vs. chemical absorber" framing is really an oversimplification.

Zinc Oxide is one of the most effective broad-spectrum UV filters out there. It protects across UVB, UVA2, and UVA1 with a flat, even absorption curve across the whole UVA-UVB range.

That uniform UVA coverage is its standout feature; titanium dioxide skews more toward UVB as its particle size drops so ZO gives more consistent and extended UVA protection.

It's also very photostable. As an inorganic oxide, ZO doesn't break down in sunlight the way some organic filters can, so it holds up over a day of wear.

This ingredient is gentle and soothing, making it go-to for sunscreens aimed at sensitive skin, rosacea, or ecezma-prone skin, babies, and children.

It's also unlikely to cause the "eye sting" that some sunscreen ingredients are known for, and regulatory agencies broadly consider it non-toxic and safe for topical use.

Beyond sun protection, ZO is also a recognized OTC skin protectant. It forms a breathable barrier that shields skin from moisture and irritation while supporting healing. This is why you'll see it as a classic active in diaper rash creams.

The only downside to ZO is that it can leave a visible white cast, especially on deeper skin tones. This is the main reason mineral sunscreens have historically felt less cosmetically elegant than chemical or hybrid formulas.

Zinc Oxide comes in both non-nano and nano forms. The dividing line is 100nm and anything under is classified as a nanomaterial by the EU.

The nano version scatters less visible light which cuts down white case and gives a lighter, more wearable texture.

Another thing worth understanding about formulation:

Uncoated ZO has some inherent photocatalytic activity. This just means it can generate reactive oxygen species under UV. It's exactly why cosmetic-grade ZO is almost always surface-coated; this coating suppresses that reactivity and improves how the powder disperses and feels.

A well-formulated coated ZO largely sidesteps this issue.

Zinc Oxide is commonly used anywhere from 10% up to the regulatory maximum in sunscreens (25%).

Mineral-only broad-spectrum products often land in the 15-25% range to hit higher SPF and UVA values. Keep in mind SPF performance depends heavily on particle size, dispersion, and the rest of the formula, and not just the percentage.

As an OTC skin protectant like diaper creams, ZO typically runs higher at roughly 10-40%.

This ingredient is generally easy to work with and doesn't photodegrade.

The only thing to know is that uncoated ZO can be a bit reactive in a formula.

Under UV, it can break down sensitive ingredients like other actives or UV filters. This is another reason coated versions are standard. ZO can also react with very acidic ingredients or throw off stability of some creams. A good formula will get around this with the right coatings and dispersion.

The EU's Scientific Committee on Consumer Safety has concluded that ZO nanoparticles "can be considered to not pose any risk of adverse effects in humans after application on healthy, intact or sunburnt skin".

You might hear that ZO is "toxic"; this is because an in-vitro (test tube) study suggested micronized ZO had potential phototoxicity. In vivo (human) investigations have disputed this and the results have come back reassuring.

So does ZO penetrate skin? The short answer is no, not in any way that matters.

The most relevant evidence comes from real-world human studies: in one, volunteers applied ZO nanoparticle sunscreen hourly for six hours and daily for five days. The advanced imaging showed the particles stayed on the surface and never reached the living epidermis, and no cellular toxicity was found.

Other in-vivo and ex-vivo work agree; ZO nanoparticles don't cross the stratum corneum, even on flexed, massaged, or barrier-impaired skin.

A small amount of solubilized zinc ions can dissolve off the particles and enter the upper skin. But the quantities are tiny compared to the zinc already naturally present in your body, and studies haven't found this to cause local toxicity.

The sunscreen bans you've heard of (like Hawaii's) are aimed at two chemical filters, Oxybenzone and Octinoxate. ZO itself it not banned and is often recommended instead.

So far, there's no solid evidence that any form of ZO harms reefs. It is an ongoing and active area of study, and worth keeping an eye on.

If you're traveling somewhere with these rules, a non-nano mineral sunscreen is the safe bet.

This ingredient is a combination of red, black, and yellow iron oxide pigments. This combination of colors is usually found in foundation, because it results in a "skin" color.

The EU typically uses CI numbers for colorants when applicable, such as CI 77489. In the US, iron oxides are regulated as color additives and "iron oxides" is the most commonly used name in US cosmetic practice.

A 2021 paper looked at skincare formulations containing iron oxides and found that they reduced transmission of blue light when measured optically. In simple terms, the pigment particles helped block or scatter part of the visible light spectrum in lab testing and the authors suggest this could translate into better protection against blue-light-related skin effects.

There is also clinical and experimental research showing that tinted products containing iron oxides can reduce visible light-induced pigmentation:

Please note, whether a product reduces visible or blue light depends on things like:

In the EU's CosIng database, iron oxides are only listed as a colorant. CosIng groups ingredients by their main cosmetic role, such as colorant, preservative, or UV filter.

Though studies say iron oxides can "attenuate blue light", they're describing an optical property and not an officially recognized cosmetic function.

So CosIng isn’t contradicting the research. It’s just classifying iron oxides by what they officially are: pigments that add color.

Similar Comparisons

The reference edit

Ingredients, questions
& further reading.

Connected source records selected through this article’s public topic index.

01

Formula cabinet

Ingredients & structured notes

Ingredient index

Ingredients Side-by-side

  1. 01Water
  2. 02Glycerin
  3. 03Decyl Glucoside
  4. 04Stearyl Alcohol
  5. 05Aloe Barbadensis Leaf Juice
  6. 06Cannabidiol - Synthetically Produced
  7. 07Cannabis Sativa Seed Oil
  8. 08Cannabis Sativa Flower/Leaf/Stem Extract
  9. 09Panthenol
  10. 10Allantoin
  11. 11Tocopheryl Acetate
  12. 12Ascorbyl Palmitate
  13. 13Chamomilla Recutita Flower Extract
  14. 14Pinus Pinaster Bark Extract
  15. 15Xanthan Gum
  16. 16Glyceryl Stearate Citrate
  17. 17Potassium Sorbate
  18. 18Phenoxyethanol
  19. 19Ethylhexylglycerin
  20. 20Water, Glycerin, Decyl Glucoside, Stearyl Alcohol, Aloe Barbadensis Leaf Juice, Cannabidiol - Synthetically Produced, Cannabis Sativa Seed Oil, Cannabis Sativa Flower/Leaf/Stem Extract, Panthenol, Allantoin, Tocopheryl Acetate, Ascorbyl Palmitate, C…
Source · skinsort.com
02

Product index

Related product references

03

Comparison edit

Read side by side