Unfortunately, the scent didn't come back in the shower. I was really surprised at how much they faded. The peppermint soap I made with 1oz ppo, was the most disappointing. It smelled so strong at first that I had to kick it outside, overwhelming and nauseating. A few months later, no scent.
May Chang EO, however, is great and some of my soap that's over a year old still has scent, not strong, but there.
There are probably more EOs that will stick but after so much wasted money on the least expensive EOs, I quit using them. There was no way I could see putting some really expensive scent into soap only to have it fade. The extreme fading also convinced me that there is likely no way any of the supposed benefits of the EOs would survive the soap making process. So, I came to the conclusion that if you're not going to get the good stuff out of the EO and it isn't going to retain the scent, what's the point.
Sorry, to be so wordy, giving up on EOs in soap when that was one of the reasons I wanted to make soap in the first place was a sad day for me.