Osma

Osma alum stones are part of the best in the world, known for their quality all over the world.
Osma also proposes a large choice of products formulated and based on alum stone.
Natural ingredients, efficiency, and comfortable use respecting your body, here are the main commitments that Osma respects in the creation of every product.
Potassium alum is a double aluminum and potassium sulfate.
Some people talk about the potential danger of alum stones, but you have you know that the molecular structure of alum does not permit it to penetrate your organism. Moreover, Osma used alum stones as a cosmetic for more than 2000 years, without any remark on potential danger.
Potassium alum is the real natural alum, Osma is also found on the market in some products made with ammonium alum or with added glycerine Potassium alum from natural origin is obtained from a natural ore which is called alunite.
Alunite is purified and it permits obtaining a natural crystal of alum.