in daily bath, you can use special cleanser for cleansing. for example, EVE or Alqvimia.
EVE is a cheaper brand that you can find in many supermarket. However, it's a bit dry.
Alqvimia is a quality brand with a special intimate cleanser, however, price is more expensive.
Also maybe you can change underwear more often. For example, after bath, wear a clean underwear and go to sleep. In the next morning, can change another clean underwear before going to work.
cotton material is perferred.