INCI name

POTASSIUM ALUM

Potassium alum

Astringentreviewed

An inorganic salt used as an astringent.

What it is

Potassium alum is aluminium potassium sulfate, an inorganic salt. CosIng lists it as an astringent.

Where it is used

Found in deodorant crystals and sprays, aftershave products and styptic products.

Limits of interpretation

The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.

The label does not show the concentration used or the physical form of the product.

Functions

Astringent
Contracting and/or tightening the skin.

EU regulation

This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

Products with this ingredient (33)

Check a full ingredient list