Hi Dave , well the chair cleaning was an after thought and she just wanted a quick once over to remove a few kids paw marks , i just used no prespray , and what i was using as a carpet rince very dilute in the tank , ultimate master powder .
Yes i have chemspec cotton cleaner on the van , i had prochem fibre shampoo and a mit , i could have done an acid rince , i could have done a lot of things more carefully in general .
But il cleaned some fine white cotton suites , the ones with the peacocks and plants on them with UM ... no issues , as well as other cottons.
On the correction side , i tried various thing , only the usual sodium bicarb was working but at almost neat paste concentration , nothing dilute working . Then dryed it with hair dryer .
If you look at the link to the chair there is a closeup of the leg pic , u see the cotton is speckled grey .... its something to do with how those speckles are formed as the pink was following the pattern of the speckles .
Not sure if its a dye of something sub surface , anyway most of the IKEA junk is made in china , so could be batsblood or anything