Honestly, I would leave out the milk for now. Its just another thing to go wrong and it really adds nothing to the soap.
Maybe. I've used the powdered milk in all my CP soaps and the previous shave soap, and the CP soap has turned out fine and as much as went wrong with the shave soap none of it seemed to be related to the milk. It may be all in my head but I think I notice a difference, at least in the bath soap, with it in there. I'd be with you if I thought it was a real risk of ruining the soap. Still something to think about.
If this batch works out for you, you can alwaya rebatch and add FO. Shave soap melts back down nicely since its soft.
Didn't think about this. I've never done a rebatch, but I can see how a softer soap would melt nice. I will probably want to do this since if the batch does work out I should have plenty of shave soap for a while (unless I give some away).
Check every 5 minutes, 15 is too long if something starts to go south.
Good call. It may get a little old having to hover over my soap that way, but until I get a feel for how it's going to behave I'll want to keep a close eye on it.
Also, HP doesn't have to be cooked until zap free unless you want to use it immediately.
I usually mold mine up as soon as its it mashed potatoes instead of vaseline.
Good to know. If I make it tonight my face should be smooth enough until tomorrow, and I don't have to work tomorrow. It would be less work. Still, I'm an impatient fellow and it will be hard to delay testing it...