I was checking out those "microfiber" wax applicator and towels in a store. The label content is 70% polyester and 30% cotton. I always thought polyester would scratch car finish. Was I looking at fake microfiber?

Thanks.

 

I suspect what you were looking at was cheap microfiber. In order for a microfiber to be called microfiber the filiments of material must be smaller than one denier. Cotton is typically not that thin so is normally not found in true microfiber towels. Cotton also has a very bad habit of dropping lint fibers. Most microfiber towels are made from synthetics, typically polyester/polybromide blends. either 70/30 or 80/20. The filaments are forced through a die and form a shape of a star. The fibers are so dense that you can pack lots of them in a small space. They have many biting edges due to their star shape but because of their miniscule size they don't scratch. They are superior at removing polishes and wax. You should look into purchasing good quality microfiber and not the local discount store specials. The towels should have a silk hem around the towel so as not to start unraveling. You should carefully remove the tag from the towel before use to avoid scratching. Microfiber's are also woven with a waffle weave for use as a drying towel. They are excellent at this and absorb several times more water than a chamois. Microfibers also do a great job at cleaning glass. I like the Pacshak microfibers.