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Magnesium Aluminum Silicate

Irritancy: 0
Comedogenicity: 0


A type of clay mineral that works as a nice helper ingredient to thicken and stabilize formulas. As a clay, it consists of platelets that have a negative charge on the surface (face) and a positive on the edge. So the face of one platelet attracts the edge of the other and this builds a so-called "house of card" structure meaning that Magnesium Aluminum Silicate (MAS) thickens up products and helps to suspend non-soluble particles such as color pigments or inorganic sunscreens (zinc oxide and titanium dioxide).

As the "house of card" structure takes some time to form but collapses quickly if the formula is stirred, products thickened with MAS can be thick in the jar but become easily spreadable upon application (called thixotropy). MAS also gives nice sensory properties, it is not tacky or sticky and gives a rich, creamy skin feel. Also a good team player and works in synergy with other thickeners such as Cellulose Gum or Xanthan Gum

Show me some proof

  • International Federation of Societies of Cosmetic Chemists Monograph number 3, An introduction to rheology

Products with Magnesium Aluminum Silicate

Borghese Advanced Fango Active Purifying Mud Mask For Face & Body Ego Azclear Action Medicated Lotion Alca Active Care Charcoal Thick Mask Alca Active Care Matcha Thick Mask Alcina Active Peeling Aqua Mineral Puffiness Eraser Eye Cream ArtDeco Pore Minimizing Primer Avivie Intensive Lifting Mask BOSCIA White Charcoal Mattifying Treatment Primer Becca Ever-Matte Poreless Priming Perfector Bell HYPOAllergenic Brow Tinted Mascara Brickell Men's Products Purifying Charcoal Face Mask For Men Erha Acne Act Triple Clay Blackhead Exfoliating Mask FCL Fixderma Multivitamin Face Mask FCL Fixderma PBA Face Mask Fulford India Emolene Cream Galénic Flash De Beaute Express Tensor Gel Graftobian Aloevation Instant Toning And Smoothing Veil Illuminate Skin Therapies Prime Renewal Mask Kruidvat Skin Science Anti Age Eye Serum L'Oreal Infallible Grip Primer Make Up Forever Step 1 Primer Shine Control Mattifying Base Mavala Eye-Lite Double Lash Night Treatment Mesauda Shine Free NYX Can't Stop Won't Stop Matte Primer Proactiv Cleanse With Benzoyl Peroxide Rajeunir Wrinkle Eraser Remescar Crow’s Feet Remescar Eye Bags & Dark Circles Remescar Instant Wrinkle Corrector Scarlett Herbalism Mugwort Mask Shea Moisture Raw Shea & Cupuacu Frizz Defense Gel Cream Skin Labo Intensive Lift Serum Tata Harper Clarifying Spot Solution The Lip Bar Skin Set Primer Venofye Viperlift Bio Syringe Yes to Carrots Vitamin-Enriched Kale Diy Powder-To-Clay Mask 9tails Premium Wrinkle Power Lifting ASDA Charcoal Mask Alama Professional Frequent Powder Shampoo Alca Active Care Red Velvet Thick Mask Alcina Herbal Mask Astra Argille Detox Face Mask Athena Charcoal Clay Mask BLACK TRUFFLE Instant Repair Syringe Bad Habit 10-Minute Rehab Green Juice Charcoal Detox Mask Beverly Hills MD Instant Eye Lift Bee Venom Beverly Hills MD One Drop Rewind™ Bielenda Botanic Spa Rituals Indian Fig Opuntia + Aloe Anti-Wrinkle Face Mask Bionyx Transformative Fine Line Syringe