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Alumina

Also-called-like-this: Aluminum Oxide, Al2O3

Details

A multi-functional helper ingredient that's used mainly as a pigment carrier.  The pigment can be an inorganic sunscreen (such as titanium dioxide) or a colorant that is blended with alumina platelets and then often coated with some kind of silicone (such as triethoxycaprylylsilane). This special treatment enables pigments to be evenly dispersed in the formula and to be spread out easily and evenly upon application. It is super useful both for mineral sunscreens as well as for makeup products. 

Other than that, alumina can also be used as an absorbent (sometimes combined with the mattifying powder called polymethylsilsesquioxane), a viscosity controlling or an opacifying (reduces the transparency of the formula) agent.

Products with Alumina

Biore Charcoal Pore Minimizer Bobbi Brown Radiance Boost Face Mask Dr. Brandt Microdermabrassion Kiehl’s Epidermal Re-Texturizing Micro-Dermabrasion Australian Gold Botanical Spf 50 Tinted Facial Lotion Australian Gold Botanical Sunscreen Tinted Face Mineral Lotion, Broad Spectrum, Water Resistant, Spf 50 Coola Daydream® Mineral Spf 30 Makeup Primer Sunscreen Cotz Face Natural Skin Tone Spf 40 Cotz Face Natural Tinted Spf 40 Dermadoctor DD Cream Dermatologically Defining BB Cream Broad Spectrum SPF 30 Mary Kay Time Wise Microdermabrasion Peter Thomas Pumpkin Enzyme Mask Enzymatic Dermal Resurfacer Peter Thomas Roth Pumpkin Enzyme Mask VMV HYPOALLERGENICS Armada Post-Procedure Barrier Cream 50+ Youth Lab CC Complete Cream SPF 30 Hourglass Illusion® Hyaluronic Skin Tint Merumaya Mineral Cleansing Paste Smashbox + Vlada Petal Metal Highlighter - Gilded Rose Soleil Toujours Extrème UV 100% Mineral Face Sunscreen SPF 45 Soleil Toujours Perpetual Radiance® Eye Glow® + Illuminator SPF 15 Bare Republic Mineral Sunscreen Spray Vanilla-Coco Biore Baking Soda Acne Cleansing Foam Biore Charcoal Acne Scrub Cliniderm Gentle Protective Lotion Spf 45 Coola Mineral Sport Sunscreen Moisturizer Spf 30 - Citrus Mimosa Dead Sea Spa Magik Sunsafe Magic Lotion SPF50 Dermadoctor Dd Eye Cream HydroPeptide Solar Defense Non-Tinted Spf 50 SkinBetter Sunbetter™ Sheer SPF 56 Sunscreen Stick Tarte Brighter Days Highlighting Moisturizer iS Clinical Eclipse Spf50+ Translucent Estee Lauder Bronze Goddess Powder Bronzer Filorga Skin-Absolute Day Kama Natural Sun Protection Context Micro-Derm Regenerator Dermacol Make-Up Cover Etude House Dear My Glass Tinting Lips Talk Br402 Tarte Tarteguard Mineral Powder Sunscreen Broad Spectrum Spf 30 True North De-Stressed Protective Lip Balm 7.2 Spf 50 BRUSH ON BLOCK Sunscreen EltaMD Uv Physical Spf 41 Lime Crime Diamond Dew Burgundy Iridescent Liquid Eyeshadow Lime Crime Diamond Dew Chocolate Diamond Maybelline Master Contour Face Contouring Kit Maybelline Superstay Matte Ink Liquid Lipstick NYX Mineral Stick Foundation NYX Mineral Stick Foundation Balance Me Natural Protection Daily Moisturiser SPF25 Heliocare 360° Mineral Tolerance Fluid SPF 50 NYX Dark Circle Concealer