It's a good idea to use soap period no matter what form it comes in. But seriously, I find that the scent of most soaps fade right after my shower. They body washes that come with the perfume tend to last a little longer, but then again I don't know because I spray the perfume on right out of the shower. I do notice that I can smell it on my skin and in my wash rag. Most soap scents don't last on me beyond the rinse off. The scents they add to soap weren't meant to last long. I haven't come across a soap that has altered my perfume. I don't always have the body wash to match my SOTD. I haven't had any problems.