You don't have to say sorry. I'd still cover the soap with saran wrap if you're going to leave the soap out of the frig and don't want it to get hot. Putting saran wrap on the top of soap may help to reduce ash since you're preventing air from getting to the top. This doesn't always work in my experience. I've laid saran wrap on top of soap and I've still gotten ash.
I've sprayed batches with rubbing alcohol and have never noticed an adverse reaction. Rubbing alcohol evaporates and if there is a minimal amount left it will rinse off the first time the soap is used. BTW, this hasn't always worked for me, either. I've sprayed the tops and still did get some ash but maybe I didn't use enough rubbing alcohol. The way I understand it is if the soap is continuing to form ash, then you still have active lye. agriffin mentioned it in a blog post.
http://www.lovinsoap.com/2011/05/secret ... onference/
(Aargh...too early in the morning...too little caffeine)
I'm not knowledgeable about the chemistry side of soapmaking but I'll do my best to explain it. Hopefully, someone will correct me if I get it wrong. :wink: Okay, my simplified explanation - the combination of lye and oil creates an exothermic reaction and it gets very hot. The heat from this reaction "cooks" your ingredients and the batch goes into a "gel stage" which looks translucent (kind of like vaseline translucency). The heat generates from the center of the batch and spreads outwards. If the heat dissipates, this can result in a gelled center and ungelled edges. This is why a lot of people heat their oils/butters to about 110 degrees and add the lye solution to the oils when it's approximately the same temperature. Some people actually combine the oils and lye solution at a higher temp - maybe about 120. Then they cover the molds with towels or something else or place into a warmed oven to keep the heat from dissipating. The heat makes saponification occur more quickly. The loaf hardens more quickly and can usually be taken out of the mold the next day and cut. You do want to remember that trace will be reached more quickly if you combine everything at a higher temperature. Some fragrance oils can cause the batch to heat up and accelerate trace which can result in seizing and the infamous "soap on a stick" result. Also, some FOs can cause the batch to rice but I'm not going to get into this right now. There are other ingredients which can also cause batches to heat up like sugar, honey, the sugar content in some dairy products.
If you lose too much heat, then some of the batch may not going through the gel stage and you get partial gel. Gelled soap looks different from ungelled soap. Partial gel is only an aesthetic issue and your soap is fine. You combine the oils and lye solution at a lower temp and put soap in the frig to prevent it from getting hot enough to gel. Reducing the heat slows saponification which is why it takes longer for the oils to use up the lye and you may still have zapping in the batch a day or longer. When it doesn't gel, the soap is more opaque, creamier looking and colorants tend to be softer. I've noticed my ungelled soaps are always softer than gelled but over time they harden up. I can't say I've ever noticed them getting as hard as gelled batches but this isn't a problem, IMO. Mainly it's personal preference on whether to gel or not gel, some people like the look and texture of gelled soap and some people like the look and texture of ungelled soap.
Almost everyone doesn't like partially gelled soap.
There has been a lot of discussions about gelling versus non-gelling soap in the CP section. You can search and find more info (probably better explained than I've done here).
A problem with soaping cooler (around 100 degrees) is some of the oils like coconut or palm or butters can start to resolidify. This can cause the batch to start to thicken and you might think you have achieved trace. This is called false trace. I've had this happen to me. The batch thickened up, I poured it into the mold and it started to separate within a few minutes. I was not happy. I ended up pouring into a crockpot and warming the batch to make sure it saponified. It turned out okay and fortunately the milk didn't scorch. I was lucky.
Again, fragrance oils can cause a batch to heat up and you can't totally prevent some gelling even with the batch placed in a frig.
HTH