Why is applying deodorant at night better than applying it in morning?
According to the International Hyperhidrosis Society, which researches sweat and body odour, applying antiperspirant deodorant at night and on completely dry skin is better than using it in the morning. At night, sweat production is lowest, giving active ingredients time to plug sweat ducts. When used at night, it controls bacterial growth that causes odour before it begins.