Certain Dri is the number one over-the-counter brand that doctors recommend for their patients with excessive sweating, and is one of the original clinical antiperspirant brands. Certain Dri offers three levels of protection to help sufferers manage their excessive sweating. Certain Dri Everyday Strength Clinical Antiperspirant provides effective all-day protection, for more certainty against odor and sweating. With 20% aluminum zirconium complex, it is the first step in managing hyperhidrosis and providing clinical sweat protection with added deodorant protection. Please note: this item is intended for people with the medical condition hyperhidrosis so it contains a strong active ingredient that may irritate the skin when applied incorrectly. It is important to apply sparingly at nighttime only to completely dry underarms. Do not use immediately after showering, shaving, or on broken and irritated skin.