i've got a customer whos sat on their light fabric sofa (not sure of fabric type) with a brand new red jumper. the red dye from the jumper has slightly transferred onto the sofa and they've asked me to clean it up. from the photo and what they said it's very faint, but noticeable enough that they want to get it cleaned.
any suggestions what i should try?
the area is fairly small just one armrest and the back rest.