Stop sweat before it starts with Certain Dri Clinical Prescription Strength Antiperspirant. Certain Dri featuresaluminum chloride one of the most powerful ingredients against hyperhidrosis (excess sweating). According to laboratory studies, this ingredient has been shown to be highly effective at treating the condition and reducing underarm wetness for up to 72 hours. Certain Dri antiperspirant is so effective at stopping sweat, it's the #1 doctor-recommended...