Coconut oil is really unique in providing amazing, fluffy lather in soaps—that’s why you’ll find it the vast majority of soap recipes. The only other oil I’ve found that gives similar numbers for lather when run through a soap calculator is babassu oil, which is quite similar to coconut oil in terms of texture and feel. It is, however more expensive. You can get 4L of coconut oil for soaping for about $25CAD, whereas 4L of babassu oil will cost you about $42CAD. These prices will obviously vary by supplier, I got these from New Directions Aromatics.
You could replace the coconut oil with any other oil, really, but it’s hard to say how your final bar will turn out. Pay attention to the “Soap Bar Quality” area on SoapCalc after you calculate your recipe. Try calculating it with coconut oil and with whatever you decide to replace it with, and watch how the numbers change. Try to keep them within the recommended ranges (listed on SoapCalc in the “Soap Bar Quality” area).
Posted in: Substitutions