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Aluminum Hydroxide

Aluminum Hydroxide

Official CosIng Information

Details

Officially, CosIng (the official EU ingredient database) lists Aluminum Hydroxide 's functions as opacifying (making the product white and non-transparent), as well as emollient and skin protectant.

However, with a little bit of digging, it turns out Aluminum Hyroxide often moonlights as a protective coating for UV filter superstar Titanium Dioxide. Specifically, it protects our skin from the harmful effects of nasty Reactive Oxygen Species (free radicals derived from oxygen such as Superoxide and Hydrogen Peroxide) generated when Titanium Dioxide is exposed to UV light. Btw, chlorine in swimming pool water depletes this protective coating, so one more reason to reapply your sunscreen after a dip in the pool on holiday.

Other than that, Aluminum Hydroxide also often shows up in composite pigment technologies where it is used the other way around (as the base material and not as the coating material) and helps to achieve higher color coverage with less pigment

Show me some proof

  • Shimizu, Katsumi, and Shoji Takekawa. "Aluminum hydroxide pigments having improved coloring capability." U.S. Patent No. 9,011,893. 21 Apr. 2015.
  • Virkutyte, Jurate, Souhail R. Al-Abed, and Dionysios D. Dionysiou. "Depletion of the protective aluminum hydroxide coating in TiO2-based sunscreens by swimming pool water ingredients." Chemical engineering journal 191 (2012): 95-103.

Products with Aluminum Hydroxide

Coola Rosilliance Mineral Bb Cream Tinted Organic Sunscreen Spf 30 Alastin Hydratint Pro Mineral Broad Spectrum Sunscreen Spf 36 Anastasia Beverly Hills Norvina Electric Cake Liner Bare Republic Mineral Spf 30 Face Sunscreen Lotion - Untinted Coola Face Spf 30 Mineral Sunscreen Cucumber Matte Finish Coola Mineral Face Spf 30 Matte Tint Moisturizer Coxir Ceramide Daily UV Sun Block Bare Republic Mineral Sunscreen Lotion Diamond Dust Holographic Shimmer Clearasil Stubborn Acne Control 5-In-1 Spot Treatment Cream Dermadoctor DD Cream Dermatologically Defining BB Cream Broad Spectrum SPF 30 Nu Skin Ap-24® Whitening Fluoride Toothpaste Peter Thomas Roth Instant Mineral Spf 45 Acorelle Sunscreen Spray For Face And Body Spf 50 Gosh Mineral Full Coverage Foundation Powder Kat Von D Ink Liner Neruda - White Skin79 Non-Chemical Sunblock Spf 50 Pa++++ bioregena Baume Solaire Visage Et Zones Delicates SPF 50+ bioregena Creme Solaire Special Bebe SPF 50+ jane iredale Powder-Me Spf 30 Dry Sunscreen - Translucent Bare Republic Mineral Face Lotion Spf 30 Cosmedix Protect Uv Broad Spectrum Spf 30 Moisturizing Spray DR ROEBUCK’S Uluru Purifying Mask Emina Pore Ranger Fizz & Bubble Pineapple Coconut Lip Scrub Ishizawa - Shigaisen Yoho Uv Powder 4+ L'Oreal Paris Makeup Studio Secrets Professional Magic Perfecting Base MAC Studio Fix Matte Foundation Stick Pond's Bb Magic Powder Acnes UV Tint Spf 35 Pa+++ April Skin Magic Snow Bb Cream Spf50+/Pa+++ Bare Republic Mineral Spf Sport Sunscreen Lotion Biore Patch Ultra Purifiant Chanel Poudre Universelle Libre Marc Jacobs Fineliner, Truffled Maybelline New York Face Studio Prime - 10 Pore Minimizing Primer SkinMedica Essential Defense Mineral Shield Broad Spectrum Spf 35 SkinMedica Essential Defense Mineral Shield™ Broad-Spectrum Spf 32 - Tinted Tarte Shape Tape Hydrating Foundation Almay Skin Perfecting Comfort Matte Foundation Boots No7 Foundation Drops Clarins Uv Plus Anti-Pollution Sunscreen Multi-Protection Broad Spectrum Spf 50 Dermablend Flawless Creator Multi-Use Liquid Foundation Drops Giorgio Armani Face Fabric Foundation Insight Mineralized Pressed Powder Noreva Aquareva BB Crème SPF 15 Noreva Iklen Spf50+ Anti-Brown Spot Photoprotective Cream Only Minerals Colour Base Spf27 Pixi by Petra Correcting Concentrate - Brightening Peach Pixy Uv Whitening Loose Powder Sephora Make No Mistake High Coverage Concealer