@AliOop , do the cut bars stick to each other after you unwrap them after? This seems like a good idea! I realize my cut bars sometimes developed ash after a few days.
If you're worried about the bars sticking together, you don't need to arrange them so they touch. That might be hard if you're using plastic wrap directly on the bars, but I can offer another possibility based on an experiment I've been doing for awhile now. I know this is a controversial method, but it seems to be working fine for me.
Backstory: I wanted to see if soap will cure properly in a more closed environment. My thought was to see if that might help the fragrance last longer, but I also think it probably reduces the chance of ash if you're having that problem.
What I did: I cut my bars when the soap was firm enough to cut, set the bars slightly apart in a container that had sides a bit higher than the bars are tall. I then covered the entire container with a very thin, lightweight plastic bag and tucked the open end of the bag under the container to seal.
The point of the container with higher sides is to keep the plastic bag from touching the tops of the bars. The thin plastic film isn't 100% impervious to water vapor, so I think that's another key point. The thin plastic bag still permits water to leave, but much more slowly.
I air out the inside of the bag 1-2 times a day for the first week or two. If I don't, the soap releases enough moisture so the interior of the bag gets damp. Don't want that.
After I confirm the bag interior is staying dry from one day to the next, I just leave the soap undisturbed in the closed environment to cure. I typically cure soap for a minimum of 6 weeks or more. I then package the bars and store them back in the closed container until they get used.
I've been using this "cure in a bag" method for a few years now. My subjective opinion is the fragrance does seem to stay stronger and last longer compared with soap bars cured in the open air. My last batch of "cure in a bag" bars is about 4 months old at the moment, and they look fine. I have seldom had a problem with ash even when curing in the open air, so I can't say if there's a marked difference there.
I also haven't monitored the weight loss of soap cured with this method and compared it to soap cured in the open air. I suppose I should do that in the interests of science, but I honestly don't care if the cure time takes awhile longer so knowing this hasn't been a priority for me.
Caution: I wouldn't recommend this "cure in a bag" method for any soap that has botanical stuff on or in the soap. That's especially true if you're using stuff like whole petals or buds or oatmeal flakes. This type of decoration needs to stay dry to reduce the chance of mold growth.
I think I am going to follow your alcohol spray and covering with cardboard techniques before CPOPing, thanks 
