Yes, the tag only, at least for starters, and do so in teeny tiny dabs, applying it using a Q-Tip or even a toothpick.
Always start any tag-removal or tape-removal treatment with the absolute minimum application.
You can go bigger if the early results show some positive but incomplete effect, but you can't go back
and use less if a large initial treatment adversely affects the box or paper!
Actually, before you try any acetone product, here's another recommendation, from Bruce Whitehill's excellent "Big Game Hunter" website
[
http://thebiggamehunter.com/collecti...pairing-games/ ]:
"One of the most annoying things a collector comes across is a price sticker on the box cover. Never try to pull off a sticker
without using rubber cement thinner. (In an office supply store you should be able to find Carter’s Rubber Cement Thinner in 4 fl. oz. bottles.)
Put the cement thinner in a clean, miniature oil can or use an eye dropper. Saturate a corner of the sticker,
then try gently peeling back the corner. Keep putting the cement thinner on as you slowly peel off the sticker.
Try not to lift up on the sticker but to fold it over so the non-sticky side is against the box;
press down as you slide the sticker along on the box. If the paper begins to lift off with the sticker,
try the same procedure at a different point on the sticker."