Alumina is a hard mineral powder made of aluminium oxide. Its particle size and shape determine whether it gives gentle slip, absorbs oil, or provides strong abrasion.
How is it used?
You should blend it with dry powders or disperse it evenly in the oil or water phase. You should control dust and use enough thickness or suspension to prevent settling.
Forms
Available forms and grades affect how this ingredient behaves and how it should be selected for a formula.
Appearance
Color, texture, and physical characteristics can vary between suppliers and product grades.
Scent
The supplied ingredient may have a characteristic scent or no documented scent.
pH
The value identifies whether it describes the supplied material, a dilution, or the finished formula.
Usage rate
Recommended incorporation levels depend on product type, supplier guidance, and the intended result.
Why we use it
Formulators choose this ingredient for specific performance, sensory, and stability benefits.
Strengths and limitations
Its advantages, compatibility considerations, and practical tradeoffs should be weighed during development.
Alternatives and substitutions
Possible replacements depend on the ingredient's role, desired skin feel, and formulation system.
Storage and shelf life
Appropriate storage conditions help protect quality and performance throughout the ingredient's usable life.
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