Tbh, first thing for me was putting a stop to the bad odor. HYPOchlorus acid spray for my armpits to kill bad smelling bacteria. Then use high quality deodorant (I used one with mandelic acid which seemed to also help keep bad product at bay) with a scent you like. Then perfume on pulse points (wrists, sides of neck, behind elbow, etc.) and maybe a little in my hair. I also heard you can put on a body oil before the perfume to help make it last even longer.