A towel I would not recommend are the IGL coating towels. They are not that good.
The pearl is ok. I tried them and I am glad I ended up using the one`s that I had without investing in anymore. They load up to fast with coating and they start smearing around coating.
Unfortunately you are asking the wrong guy about using a wax or sealant. I have not touched either in a long time. But they work well for coatings, polish removal, interior wipe downs. A nice multi-purpose towel.
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