Potassium alum is an inorganic chemical compound, salt produced through the recovery of alumina from alunite.

Safety
Aluminium can interfere with different biological processes (cellular oxidative stress, calcium metabolism, etc.), so it can induce toxic effects in different organs and systems, and the nervous system is the main target of its toxicity.

What it is used for and where
Cosmetics
Cosmetic astringent. This ingredient exerts a direct effect on the skin by tightening dilated pores by contracting stratum corneum cells and removing superfluous oil.
Synonyms: EC number 233-141-3

CAS: 10043-67-1 7784-24-9