Alumina is a safe, effective abrasive for exfoliation and texture, but can be irritating if particles are too large or used too aggressively.
Irritation
moderate
Source
natural
Beauty ingredient research
Browse the review database to understand what an ingredient is, what it does in a beauty formula, when it is useful, and when it deserves caution across skincare, haircare, bodycare, makeup, and more.
20769
Reviewed ingredients
524
Low-concern standouts
2884
Need usage caution
Alumina is a safe, effective abrasive for exfoliation and texture, but can be irritating if particles are too large or used too aggressively.
Irritation
moderate
Source
natural
Hydrated silica is a gentle, mineral-based abrasive that polishes teeth and exfoliates skin without harshness, but overuse can wear down enamel or irritate sensitive skin.
Irritation
low
Source
natural
A gentle mineral abrasive that helps polish skin and teeth without harshness, but its role in anti-aging is still emerging.
Irritation
low
Source
natural
Magnesium fluoride is a mineral salt used mainly as a bulking or abrasive agent in cosmetics; it offers no proven skincare benefits and may cause irritation in sensitive individuals.
Irritation
moderate
Source
natural
An abrasive mineral that can help polish teeth or exfoliate skin, but may be too harsh for sensitive skin or frequent use.
Irritation
moderate
Source
synthetic
Nephrite powder is a natural mineral exfoliant with a long history in traditional beauty, but scientific evidence for its skin benefits is limited.
Irritation
moderate
Source
natural
An abrasive mineral salt that helps polish teeth or exfoliate skin, but may be too harsh for sensitive skin or gums.
Irritation
moderate
Source
synthetic