I only put the syndet bars in the fridge overnight because the temps here were over 100 and probably more in my garage where I put the bars to solidify before taking them out of the mold. They went into my soaping storage after they were unmolded and have been there for at least a couple of weeks. One of the other members suggested putting in the freezer to get them harder...which did not work. They are still very soft, which I already know the feeling since I worked with Stephenson's Melt and Pour soap years ago.Don’t out the syndet bars in the fridge. It can take three days for them to harden and it feels more like a lotion bar instead of MP which I work with every day.
I am now using the bars but have weighed the current one so I can compare it's decrease in weight with the other syndet bars I have made. I'm not all that sold on the product at this time but want to give it a fair test before I make a decision because the ease of making has to go into this decision, along with my daughter's result with her cochlear implant.