Cleaning Phono Stylus- white residue

I have been an audiophile for many years but I am just a novice with analog. I have been using a Transfiguration Axia cartridge on a Vector 3 tonearm. I was wondering about the best way to clean the stylus. I have been using Record Research Lab LP#9 liquid stylus cleaner with brush. Although Transfiguration recommends holding the cartridge vertically, the Vector does not have a removable head shell. As such I've been gently taking the damp brush and moving it forward over the stylus. Recently I looked at the bottom of the cartridge near the stylus and noticed a white residue?? I'm wondering if this residue is related to the liquid cleaner and also hoping I didn't get any liquid into the cartridge mechanism. I read about using a dry Mr Clean Magic Eraser, lowering the stylus onto a small section of the eraser, and abandoning the liquids. Any advice from experienced analog lovers is most welcome! Thanks in advance.