Men For the product to work, spray the antiperspirant on a clean armpit from a distance of at least 15 cm, well before sweating. Applying it immediately before training does not give the active ingredients time to act; after intensive cardio the body will sweat and the antiperspirant will be washed away. Spraying antiperspirant after strenuous exercise instead of showering is also largely ineffective; it is better to apply cologne or perfume. Deodorant and Roll On