If you are wearing a tight-fitting shirt, you might not sweat at all. If it is very warm, then that will cause sweating. Sweating helps keep the body cool by evaporating water from your skin’s surface. When you sweat excessively, however, this can moisten your shirt and make it more uncomfortable to wear. Therefore, any kind of deodorant with antiperspirant properties should be used on hot days to prevent excessive sweating or irritation caused by wet clothing against the skin.
How often should I apply deodorant?
You do not have to dry yourself off after applying deodorant because perspiration stops when you stop rubbing the product into the underarm area (this is why some people recommend putting on new clothes before getting dressed). However, if you are in public places where other people may notice how much time you spend under the arms using an antiperspirant/deodorant stick or spray – such as at work – then use less than what they would normally see and reapply every two hours for maximum protection until their eyes can no longer follow your movements accurately enough for them to determine whether there is someone else present who could be responsible for any odor they observe emanating from your underarms: