Cristal deodorant roll-on from Brand Italia. Thanks to its formula, it leaves no traces or residue on the skin and provides a pleasant sensation of long-lasting freshness. Fragrance-free Unisex Dermatologically tested Prevents the development of microorganisms that cause unpleasant odors Does not contain aluminum Apply to clean, dry skin. 50ml Crystal deodorant (potassium alum or astringent) is a natural and soothing deodorant, with antibacterial properties and acting as an antiseptic, which prevents the proliferation of odor-causing bacteria in the armpit, without blocking the secretion of sweat by obstructing the pores. Thus, it forms an environment on the skin that prevents the appearance of unpleasant odors, providing a lighter and more natural feeling. It does not work by covering up unpleasant body odors, like regular commercial deodorants. It is a natural mineral safe for use as an alternative to hydrated aluminum chloride salts. The deodorant crystal molecules (alum) are not absorbed by the body, unlike aluminum molecules, which have been associated with various health problems. The deodorant crystal, i.e. alum (astringent) and aluminum are different chemical compounds, with distinct chemical formulas, different properties and therefore different chemical behaviors.