Among my growing shaving collection I have had a puck of Crabtree and Evelyn - Nomad shaving soap for more than a year now. It wouldn't fit directly into it's designated shaving mug so I had used a pocket knife to trim back the edge. I then stuffed everything into the shaving mug. There are some dips and holes in the soap around the edges where it fits into the mug.
I use the shaving soap perhaps every two weeks or so. But today I noticed an unusual greenish-gray crusty-like covering in the low-lying spots of the soap. The soap itself has a white or off-white color about it. If I didn't know it was soap, I would suspect that mold was growing on the soap ?
Any comments about this greenish-gray crusty stuff on my soap ?