The product's active ingredient, which has been clinically proven to effectively prevent excessive foot sweating and odor, is designed especially for people with sweaty feet (moderate to heavy perspiration). For up to three days, Perspirex Foot Lotion contributes to a very high degree of sweat reduction. Apply at night to skin that is completely dry and intact. Reapplying in the morning is not necessary. There is no perfume in Perspirex Foot Lotion.