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ALUMINA

Last update on Apr 30, 2023
Alumina is a white powder that is commonly used in cosmetics. It is important to note that alumina is not the same as aluminum metal, however, it is also known as aluminum oxide. The chemical formula for alumina is Al2O3. In cosmetics, alumina is often used as a thickening agent, an absorbent, or as an abrasive in exfoliating products. It helps in absorbing impurities and excess oil from the skin, thus making it a common ingredient in facial cleansers and masks. Alumina has a fine white appearance and a high viscosity, which means that it has a thick, sticky consistency. When used in cosmetic products, it creates a smooth and creamy texture.
CAS Number: 1344-28-1Chem/IUPAC Name: Aluminium oxideEINECS/ELINCS No: 215-691-6COSING REF No: 74191

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What is ALUMINA used for?

Alumina powder is a versatile ingredient that finds its use in a variety of cosmetic and personal care applications. It is primarily used as an absorbent but serves many other different functions.
  • Cosmetic products: Used as a texture enhancer and thickening agent. It imparts a soft, silky feel to products, making them more pleasant to use. As an absorbent, it controls oil and sweat production and is used in products like antiperspirants, facial powders, and makeup primers
  • Skin care: Used as an exfoliating agent. It is a mild abrasive that helps in removing dead skin cells and unclogs pores, leaving the skin brighter and smoother. Alumina can also be used in anti-aging products as it can help stimulate collagen production, thereby enhancing skin elasticity and reducing the appearance of fine lines and wrinkles

Origin

Alumina is typically made by calcining aluminum hydroxide at high temperatures to remove water and yield aluminum oxide. The resulting powder can be further processed to create various forms of alumina with different properties, such as particle size and surface area.

What does ALUMINA do in a formulation?

ABRASIVE|
ABSORBENT|
VISCOSITY CONTROLLING

Safety Profile

Alumina is generally considered safe for use in cosmetics and personal care products by various regulatory agencies. It has a low comedogenic rating and is unlikely to cause acne or clog pores. However, some people may be allergic to alumina, and it is always recommended to perform a patch test. Further, Alumina is a vegan and halal ingredient, as it is derived from minerals and not from animal sources.

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ALUMINA technical profile

Property Values
Boiling Point 2980°C
Melting Point 2072°C
pH 9.0
Solubility Insoluble in water
Viscosity High