Perspirex Antiperspirant Deodorant for Men offers long-lasting, reliable protection against sweat and odor formation for up to 3 to 5 days, so you can feel completely comfortable in your skin again. It has been uniquely formulated to control odor and is clinically proven to provide extra effective sweat protection for 3 to 5 days. It combines the active, hard-working ingredient Aluminum Chloride with the patented Perspirex skin care system to help minimize any potential skin irritation and improve skin comfort. How to use: The skin must be intact, without chafing, burns or irritations. You should not have waxed, shaved or had laser hair removal 48 hours before applying Perspirex. You should also not have put on a deodorant or antiperspirant with alcohol or aluminum chloride 24 hours before. The skin must be clean and completely dry. Apply at night, just before going to sleep. Apply two passes upwards and two passes downwards, no more. Let it dry for a few seconds. The next morning, wash your armpit with soap and water to remove any remaining product. Reapply it after 3-5 days (the first time you use Perspirex, you must apply it for 5 nights in a row, after these 5 nights, apply it every 3-5 nights).