I'm pretty much in love with my felted soap. I would be making some right now if I had more soap on hand, and if I wasn't busy tweaking this little tutorial. I hope you enjoy it. This is a first in the tutorial world for me.
Many yarn shops have roving available to purchase by the ounce. If you don't have a yarn shop in your area there may also be a craft shop that carries pre-packaged roving. I also found that round soap works better than square soap, but it is surprisingly difficult to find quality soap that is nice and round. Dear aspiring soap maker, start making all of your luxurious goat's milk soap in round bars. We can be BFF. I will buy my soap exclusively from you.
Make sure that you wrap some roving around the soap in both directions. You will use a couple of layers to do this. You can play around with how much roving you use to cover your soap; I tend to like mine with a thicker coating.
Individual wool fibers have tiny barbs on them that grab together when water, soap, and agitation are applied. Remember that wool sweater that you accidentally put into the washing machine and it came out small enough to fit your baby? This is the same concept. The fibers fuse together and get tighter and smaller until eventually they are tight around the soap.
As you're rubbing, you will notice that there are some loose spots. Rub these spots gently at first and then more vigorously as they start to tighten. Be sure to give special attention to the sides and corners if you are working with square soap.
You may choose to dip the soap back into the hot water a few times during this process. The act of dipping the roving in hot or cold water "shocks" the wool fibers and helps them to tighten up. Continue to agitate the roving until you are satisfied with how tight it is.
And that's it! The felt stays on the soap and acts as a washcloth or loofah in the shower and creates major lather. The wool will continue to felt itself as the soap is used and if you're lucky, by the time the soap is gone you're left with a cool little wool ball.
Now. Go felt yourself some soap.
You know you want to.
Let me know if you have questions.