freeze the tack with ice to be able to scrape the most of it off. Mineral oil will remove the rest of it...but watch it, it will stain. Check for colorfastness. Remove the mineral oil with common upholstry cleaner.
if this doesn't work use the dark carpet answer but purchase some carpet shampoo to use after hoovering and washing as in some cases it can leave a greasy mark.
Put a small mount of vegatable...
Try wetting a tissue, rubbing it on the blue tack and then use your fingernail to scratch the remains off. Repeat these steps until surface is clear from blue tack.
I use WD-40 and a towel. It will dissolve the remaining glue. If it is a large area, i use a paint scraper. Lighter fluid, nail polish remover or lighter fluid will also work as well.
I used...
same thing happened to my child's barbie, wash and wash and comb. If your scalp is sticky, try using a brush and scrapping, if your head is still stick remove it with head and shoulders or use...
How to remove tack / gum from fabric..
This works well for any fabric other than silk.
First place the garment into the freezer for a couple of hours. This allows the Tack to become very hard...