Skin science article
The Ordinary Serum Foundation Versus Mac Cosmetics Studio Fix Powder Plus Foundation
The Ordinary Serum Foundation Versus Mac Cosmetics Studio Fix Powder Plus Foundation What's inside Key Ingredients Benefits Concerns Ingredients Side-by-side Cyclopentasiloxane Water Caprylyl Methicone Coconut Alkanes Trimethylsiloxysilicate PEG-9 Polydimethyl
The Ordinary Serum Foundation Versus Mac Cosmetics Studio Fix Powder Plus Foundation
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Cyclopentasiloxane
Water
Caprylyl Methicone
Coconut Alkanes
Trimethylsiloxysilicate
PEG-9 Polydimethylsiloxyethyl Dimethicone
Coco-Caprylate/Caprate
Dimethicone/PEG-10/15 Crosspolymer
Cetyl Diglyceryl Tris(Trimethylsiloxy)Silylethyl Dimethicone
Dipropylene Glycol
Tocopherol
Polyglyceryl-3 Diisostearate
Polyglyceryl-3 Polyricinoleate
Polyglyceryl-4 Isostearate
Disteardimonium Hectorite
Hectorite
Sodium Chloride
Hexyl Laurate
Dimethicone/Vinyl Dimethicone Crosspolymer
PEG-10 Dimethicone
Stearic Acid
Methyl Methacrylate Crosspolymer
Alumina
Trisodium Ethylenediamine Disuccinate
Phenoxyethanol
Chlorphenesin
CI 77891
Iron Oxides
Tin Oxide
Aluminum Hydroxide
CI 77163
Mica
Magnesium Stearate
Triethoxycaprylylsilane
Cyclopentasiloxane, Water, Caprylyl Methicone, Coconut Alkanes, Trimethylsiloxysilicate, PEG-9 Polydimethylsiloxyethyl Dimethicone, Coco-Caprylate/Caprate, Dimethicone/PEG-10/15 Crosspolymer, Cetyl Diglyceryl Tris(Trimethylsiloxy)Silylethyl Dimethicone, Dipropylene Glycol, Tocopherol, Polyglyceryl-3 Diisostearate, Polyglyceryl-3 Polyricinoleate, Polyglyceryl-4 Isostearate, Disteardimonium Hectorite, Hectorite, Sodium Chloride, Hexyl Laurate, Dimethicone/Vinyl Dimethicone Crosspolymer, PEG-10 Dimethicone, Stearic Acid, Methyl Methacrylate Crosspolymer, Alumina, Trisodium Ethylenediamine Disuccinate, Phenoxyethanol, Chlorphenesin, CI 77891, Iron Oxides, Tin Oxide, Aluminum Hydroxide, CI 77163, Mica, Magnesium Stearate, Triethoxycaprylylsilane
Synthetic Fluorphlogopite
Magnesium Potassium Fluorosilicate
Boron Nitride
Aluminum Starch Octenylsuccinate
Octyldodecyl Stearoyl Stearate
Hydrogenated Vegetable Oil
Silica
Dimethicone
Illite
Zinc Stearate
Dicalcium Phosphate
Pentaerythrityl Tetraisostearate
Silybum Marianum Seed Oil
Nannochloropsis Oculata Extract
Alaria Esculenta Extract
Porphyra Umbilicalis Extract
Rosa Hybrid Flower Extract
Caprylic/Capric Triglyceride
Caprylyl Glycol
Bisabolol
Ethylhexylglycerin
Kaolin
Sorbitan Tristearate
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
CI 77491
CI 77492
CI 77499
CI 77289
CI 77288
CI 77510
CI 77742
CI 15850
CI 77007
CI 42090
CI 45410
CI 73360
CI 19140
CI 15985
Synthetic Fluorphlogopite, Magnesium Potassium Fluorosilicate, Boron Nitride, Aluminum Starch Octenylsuccinate, Aluminum Hydroxide, Octyldodecyl Stearoyl Stearate, Hydrogenated Vegetable Oil, Silica, Dimethicone, Illite, Zinc Stearate, Dicalcium Phosphate, Pentaerythrityl Tetraisostearate, Silybum Marianum Seed Oil, Nannochloropsis Oculata Extract, Alaria Esculenta Extract, Porphyra Umbilicalis Extract, Rosa Hybrid Flower Extract, Caprylic/Capric Triglyceride, Caprylyl Glycol, Bisabolol, Ethylhexylglycerin, Kaolin, Mica, Triethoxycaprylylsilane, Sorbitan Tristearate, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Tocopherol, CI 77891, CI 77491, CI 77492, CI 77499, CI 77163, CI 77289, CI 77288, CI 77510, CI 77742, CI 15850, CI 77007, CI 42090, CI 45410, CI 73360, CI 19140, CI 15985
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Alternatives
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Aluminum 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.
CI 77163 is the color-index name for Bismuth Oxychloride, a lab-made white powder that acts as a pearl pigment.
It's what gives a lot of pressed powders, eyeshadows, highlighteres, and mineral foundations that soft pearly glow.
Due to its structure as flat, plate-like crystals that stack like tiles, it feels silky and sticks to skin well. This also makes it very chemically stable and insoluble under normal skin conditions (this just means it sits on top of skin rather than going into it).
It has an interesting quirk: it slowly goes gray in sunlight and the graying is partly reversible in the dark.
At this time, there's no legal cap on how much a brand can use. Both the FDA and the EU permit it without restriction so real-world concentration levels come down to formulation:
Allergy risk is low as well since it's insoluble and doesn't release free metal ions into skin. True allergic contact dermatitis to it is rare enough that there's very little published cases.
However, mineral makeup users do report itching or stinging. The leading explanation for this is irritation from those stiff platelet crystals rubbing on skin (also more likely with heavy, high-percentage loose mineral powders) rather than an immune reaction.
This ingredient shows up on a lot of "pore-clogging" lists but there's no real evidence behind that. It doesn't even have a comedogenic rating from an actual study; the numbers you'll find online come from blogs citing other blogs.
Some people still find it breaks them out. So if that's you, definitely trust your skin.
Ci 77891 is a white pigment from Titanium dioxide. It is naturally found in minerals such as rutile and ilmenite.
It's main function is to add a white color to cosmetics. It can also be mixed with other colors to create different shades.
Ci 77891 is commonly found in sunscreens due to its ability to block UV rays.
Mica is a naturally occurring mineral used to add shimmer and color in cosmetics. It can also help improve the texture of a product or give it an opaque, white/silver color.
Serecite is the name for very fine but ragged grains of mica.
This ingredient is often coated with metal oxides like titanium dioxide. Trace amounts of heavy metals may be found in mica, but these metals are not harmful in our personal products.
Mica has been used since prehistoric times throughout the world. Ancient Egyptian, Indian, Greek, Roman, Aztec, and Chinese civilizations have used mica.
Tocopherol 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.
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).