Yes it was said on here sometime ago.
It also said to tumble dry them.
I decided to have a go as my towels were a bit sand papery and lo and behold it worked.
I know the tumble dryer works, NOTE these are not CHEAP towels , Egyptian cotton I'll have you know bought in Egypt & Costco no cheap crap in this house.L.O.L
do you live in a hard water area? limescale on the towel fibres can make them rough. If this is a problem then water softener tablets in the machine can help but they are expensive