@donasmrs--I don't think that's going to be an issue if the antifungal soap has all natural antifungal ingredients. I use an antifungal soap that has only eucalyptus and tea tree which are both natural antifungal herbs. I don't think that fungi can build tolerance to these, they are not lab made medicines.
I actually use antifungal soap every day to fight acne. Humid climate and oily skin is a great combination for skin fungal infections that cause acne.