Aluminum Hydroxide
AKA “Hydrated alumina, Amphojel, aluminum hydrate, Dried aluminium hydroxide, Aluminum hydroxide, dried, ALternaGEL, Aluminium hydroxide, Alu-Cap, Aluminum hydroxide gel, Aluminium hydroxide gel”
Synthetic
Ingredient Facts
Aluminum hydroxide
AKA: Hydrated alumina, Amphojel, Aluminum hydrate, Dried aluminium hydroxide, Dried, ALternaGEL, Aluminium hydroxide, Alu-Cap, Aluminum hydroxide gel, Aluminium hydroxide gel
Synthetic · Buffering · EWG: 1
Synthetic
Synthetic
Clean
Aluminium hydroxide is the most stable form of aluminium. It is found in nature as the mineral gibbsite (also known as hydrargillite) and its three, much more rare, polymorphs: bayerite, doyleite and nordstrandite. Aluminum hydroxide is used as an antacid and included as an adjuvant in some vaccines. Aluminum is the most abundant metal in the earth's crust and is always found combined with other elements such as oxygen, silicon, and fluorine. (L739, L740, L756)
Solubility Insoluble in water; soluble in alkaline solutions, acid solutions
Formula
AlH3O3
Mol. Weight
78.00
CAS #
21645-51-2
Form
Powder
State
White solid in various forms; [ICSC] White odorless granules; Slightly soluble in water; [MSDSonline]
See origin →
Functions
Buffering
Draws water to skin
Skin Types
●all-skin-types
Best For
General
Tulipscreen™ Hydrating Lip Oil
Bloom Effects
The ILIA Look
ILIA Beauty
Super Serum Skin Tint SPF 40
ILIA Beauty
Comfort Level Lip Mask
Credo Beauty
Super Serum Skin Tint SPF 30
ILIA Beauty
Cream Clay Blush Last Call
MOB Beauty
Cream Clay Blush
MOB Beauty
Hydrating Shine Lip Balm
MOB Beauty
Vital Skincare Concealer - Atelier T3
Westman Atelier
Vital Skincare Concealer - Atelier M2
Westman Atelier
Vital Skincare Concealer - Atelier L4
Westman Atelier
Vital Skincare Concealer - Atelier D3
Westman Atelier
Vital Skincare Concealer - Atelier L1
Westman Atelier
Vital Skincare Concealer - Atelier T1
Westman Atelier
Vital Skincare Concealer - Atelier M4
Westman Atelier
Vital Skincare Concealer - Atelier T2
Westman Atelier
Vital Skincare Concealer - Atelier M1
Westman Atelier
Vital Skincare Concealer - Atelier D4
Westman Atelier
Vital Skincare Concealer - Atelier L3
Westman Atelier
Vital Skincare Concealer - Atelier T4
Westman Atelier
Vital Skincare Concealer - Atelier L2
Westman Atelier
Vital Skincare Concealer - Atelier M3
Westman Atelier
Vital Skincare Concealer - Atelier D2
Westman Atelier
Vital Skincare Concealer - Atelier D1
Westman Atelier
Bonne Brow Defining Pencil - Bark
Westman Atelier
Bonne Brow Defining Pencil - Clay
Westman Atelier
Bonne Brow Defining Pencil - Stone
Westman Atelier
Bonne Brow Defining Pencil - Slate
Westman Atelier
Beauty Butter Powder Bronzer - Soleil Riche
Westman Atelier
Beauty Butter Powder Bronzer - Beau Soleil
Westman Atelier
Beauty Butter Powder Bronzer - Coup De Soleil
Westman Atelier
Seriously Jelly 24 Hour Hydrating Lip Color
Gen See
Cruise Liner Lip Pencil
Gen See
Mixed Media Must Haves
Gen See
Straight Flush Glow Stick
Gen See
Cruise Liner Eye Pencil
Gen See
Pick Me Up Lip Matte Lipstick
Gen See
Clean Sheen Cheek + Lip Color
Gen See
Spot Stick Concealer
Jillian Dempsey
GetSet® Matte Powder Blush
Tower 28 Beauty
Toni Bravo GetSet® Matte Powder Blush
Tower 28 Beauty
ReDimension Hydra Bronzer
RMS Beauty
UnCoverup Concealer
RMS Beauty
Bright Start Creamy Buildable Airbrush Concealer
LYS Beauty
Higher Standard Cream Glow Blush Stick
LYS Beauty
Triple Fix Blurring Skin Tint Foundation Stick
LYS Beauty
Soft Sketch Lip Liner Pencil
Finding Ferdinand
Waterline Eye Brightener
SOSHE Beauty
Swipe Serum Concealer®
Tower 28 Beauty
Safety Assessment of Alumina and Aluminum Hydroxide as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Aluminum Hydroxide
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Effect of Chimpi, dried citrus peel, on aquaporin-3 expression in HaCaT human epidermal keratinocytes.
Ikarashi N, Kaneko M, Wakana D, Shinozaki Y, Tabata K et al.
Molecular biology reports, 2022
Development and Efficacy Evaluation of Innovative Cosmetic Formulations with Caryocar brasiliense Fruit Pulp Oil Encapsulated in Freeze-Dried Liposome
Kakuda L, Maia Campos PMBG, Oliveira WP
Pharmaceutics, 2024
Mannitol Is a Good Anticaking Agent for Spray-Dried Hydroxypropyl-Beta-Cyclodextrin Microcapsules.
Kou X, Zhang X, Cheng Y, Yu M, Meng Q et al.
Molecules (Basel, Switzerland), 2023
Phytochemical and nutrient composition of the freeze-dried amazonian palm berry, Euterpe oleraceae mart. (acai).
Schauss AG, Wu X, Prior RL, Ou B, Patel D et al.
Journal of agricultural and food chemistry, 2006
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR