Traditionally, steam was used primarily to apply sealant to the car. Worked very well. Throw them in the washing machine to clean with another microfiber using real microfiber cleaning liquid and they hold up well, unlike the microfiber sponges from other competitors. Hope these hold up well. Microfiber isn't thick, plush microfiber, it's the regular microfiber cloth you might be used to. It applies my wax and sealant very nicely and evenly. I'd recommend trying these if you've had issues with previous poor quality sponge applicators.
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