I invest in good microfibers so that they do not scratch paint. As they get dirty I would typically toss them in the washer and use regular laundry detergent such as tide. When I would take them out they would feel somewhat stiff after they have dried. I have since switched over to a dedicated microfiber detergent.
These microfiber detergents removes waxes, polishes and compounds from your microfiber towels, leaving them looking and feeling new after every wash. They will also remove oil, grease, wax and polish residue, protein-based stains like blood and sweat, grass stains, food, and cosmetics.
These are the one's I have used. They all work very well.
First one up is Wolfgang Microfiber cleaner. This was the first microfiber detergent that I used.
http://www.autogeek.net/wolfgang-mic...r-cleaner.html
This one works very well. It comes in a container with a pre measured cup making it easy to squeeze out the correct amount of product. It will keep one's microfiber cleaner and feeling soft. It will not remove sever stains. The con with this one is that it is expensive. I don't have any photos of how this one performs.
I then purchased Detailer's Pro Microfiber Cleaner.
http://www.autogeek.net/dp-microfiber-cleaner.html
This one also works very well. It does the same thing as all microfiber detergents. It cleans and keeps the microfibers feeling softer. It will not remove sever stains. This one is priced better with more quantity.
Up next is Blackfire Microfiber Cleaner
http://www.autogeek.net/blackfire-mi...r-cleaner.html
I used this one to clean up some microfibers that I used to clean the leather seats in my brothers Grand Prix. This is what the towel looked like after I had cleaned his seats. This one cleaned just as well as the others. It also left the towels feeling soft.
The towel after washing.
I then purchased 3D Towel Kleen. This one is by far the most economical. It's cost effective for a gallon of product. Again this cleans just as well as the others and it also leaves the microfibers soft.
http://www.autogeek.net/3d-towel-kleen.html
Here are some photos of the towels I use for a rinseless wash
The white ones have some slight grey staining from a spray on sealant product I used a couple months back, which makes them appear dirtier than they really are.
After
These all work great. Wolfgagn, Blackfire and Detailer's Pro clean well but the con is the price. 3D Towel Kleen is the most cost effective of the bunch. They are all on par as far as cleaning power and towel softness. Towel Kleen is a thicker product like a detergent while the other three products are more liquid. I would recommend either of these.