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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

Brickell Men's Products Purifying Charcoal Face Mask For Men Tata Harper Clarifying Spot Solution Yes to Carrots Vitamin-Enriched Kale Diy Powder-To-Clay Mask GLAMGLOW Supermud Clearing Treatment Superdrug B. Glowing Clay Face Mask Vine Vera Resveratrol Shiraz Instentic Non-Surgical Syringe Anne Semonin Mineral Mask DECLÉOR Phytopeel Exfoliating Cream GLAMGLOW Youthmud Tinglexfoliate Treatment Glossier Mega Greens Galaxy Pack Paula's Choice Calm Redness Relief 1% Bha Lotion Exfoliant Perricone MD Thio:Plex Intensive 2-Step Brightening System [Step 1: Intensive Base] The Body Shop Himalayan Charcoal Purifying Glow Mask Uriage Bariéderm Drying Repairing Cica-Spray dr. denese Black Clay Firming Facial Mask Amie Spring Clean Deep Cleansing Mask Clinique City Block Purifying Charcoal Clay Mask + Scrub Freeman beauty Detoxifying Charcoal + Black Sugar Jack Black Deep Dive® Glycolic Facial Cleanser Swisse Manuka Honey Detoxifying Facial Mask Cal PHARMA Turmeric Herbal Anti-Aging Moisturizer EradiKate Acne Treatment Indie Lee Blemish Lotion Josh Gold Mask Peter Thomas Roth Instant Firm X Eye SeneGence 3-In-1 Normal To Dry Cleanser Sephora Mud Mattifying Mask Bioclarity Clarifying Masque Clinique Exfoliating Scrub Naturally Serious Hydra Plumping Mask Beauty Pie Lumiboost Spot Brightening Serum Beyond Belief Skin Vitality Lift And Firm Clay Mask Decubal Ecological Face Cream OSEA Ocean Cleanser PCA Skin Nu-Derm Exfoderm Paula's Choice Shine Stopper The Body Shop Chinese Ginseng & Rice Mask e.l.f. Baked Highlighter (Moonlight Pearls) Dr Organic Snail Gel Eye Serum AcneFree Therapeutic Sulfur Mask Freeman beauty Cleansing Apple Cider Vinegar Clay Mask + Scrub JAN MARINI Rosalieve Redness Reducing Complex Korres Greek Yoghurt Foaming Cream Cleanser The Inkey List Kaolin Mask Chantecaille Bamboo And Hibiscus Exfoliating Cream Chantecaille Hibiscus Smoothing Mask DCL Detoxifying Clay Mask NIOD Mastic Must Physicians Formula Organic Wear® Natural Origin All-In-1 Beauty Balm Cream Spf 20 Elave Sensitive Sun Spf30