Certain Dri Roll-On Anti-Perspirant, 1.2 fl oz: * 3 times longer lasting protection; even after 72 hours, according to an independent test * For excessive perspiration * Certain Dri contains aluminum chloride, the ingredient prescribed by doctors to patients with excessive perspiration or hyperhidrosis * Laboratory Studies show that aluminum chloride is more effective and longer lasting than other ingredients found in anti-perspirants, yet safe when used as directed