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Aluminum Hydroxide

Aluminum Hydroxide

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

Citra Green Tea Antiacne Essence Cream Coola Rosilliance Mineral Bb Cream Tinted Organic Sunscreen Spf 30 KKW Beauty Classic Eyeshadow Palette Aveeno Ultra-Light Sensitive Skin Mineral Sunscreen 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 Bare Republic Tinted Sunscreen SPF 30 Coola Face Spf 30 Mineral Sunscreen Cucumber Matte Finish Coola Mineral Face Spf 30 Matte Tint Moisturizer Coxir Ceramide Daily UV Sun Block Missha All Around Safe Block Water Proof Sun Milk The Skin House UV Protection Sun Block Bare Republic Mineral Sunscreen Lotion Diamond Dust Holographic Shimmer Belo SunExpert Tinted Sunscreen Spf50 Pa++++ COSRX Blemish Cover Cushion Chanel Poudre Universelle Libre Natural Finish Loose Powder Clearasil Stubborn Acne Control 5-In-1 Spot Treatment Cream Dermadoctor DD Cream Dermatologically Defining BB Cream Broad Spectrum SPF 30 Garnier Light Eye Roll-On Nu Skin Ap-24® Whitening Fluoride Toothpaste Peter Thomas Roth Instant Mineral Spf 45 Sariayu Tinted Moisturizer Troiareuke H+ Healing Cushion Spf50+ Pa++++ Acorelle Sunscreen Spray For Face And Body Spf 50 Belo Essentials Kojic BB Cream SPF 50 Belo SunExpert Reef-Friendly Sunscreen Spf60 Foodaholic Multi Sun Cream SPF50++/PA+++ 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 Acwell Uv Cut Bosong Sun Powder Spf 50+ Pa++++ Bare Republic Mineral Face Lotion Spf 30 Pond's Angel Face Natural Mattifying Face Powder Pretty Skin Aqua Powdery Sun Cream 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+ KVD Vegan Beauty Everlasting Blush L'Oreal Paris Makeup Studio Secrets Professional Magic Perfecting Base Lacto Calamine Daily Sunshield MAC Studio Fix Matte Foundation Stick Pond's Bb Magic Powder Sunless Pó Compacto Fps 50 TIA'M Arbutin Blending Powder