Through self experiment I found out that soap does nothing to remove armpit smell for me. It works just for 10 minutes and that is because most soap has some amount of perfume in it masking smell. Anti-perspirant on the other hand works very well. So I wonder who convinced us to wash parts of our body that are not covered in hydrophobic substances with soap? Since I stopped using it my skin is significantly less oily thus I don't need soap to remove it anymore.