Directions: Dry the skin completely before application (Wait at least 2 hours after bathing or showering to apply Drysol) Apply once a day at bedtime.Drysol with its unique formula, is one of the most effective topical anti-perspirant for excessive sweating that contains a special ingredient: Aluminum Chloride Hexahydrate ACH, with a 98% proven efficacy in controlling sweat and a 30% reduction in sweat volume. Drysol Dab-On Regular Strength 12% DRYSOL may be harmful to certain metals and fabrics.