Collection: Osma

Alum is know and used as a cosmetic since several millennia. Egyptians, Greeks, Romans,  used it dayly for all kind of stuff (painting, leather work, agriculture, water treatment…). Laboratoires Osma, mades, stiil respecting the natural alum crystal, one of the largest offer of cosmetics based with alum stone for dayly use. Last French manufacturer of alum stones, Laboratoires Osma, thanks to its unique know-how is recognized as one of the best alum stones’ manufacturer by offering high quality products with one of the purest alum crystal in the world.