Remove stamp ink / ink stain from white T-shirt
Stamp ink / ink stain on white T-shirt is great with OxiMittel remove.
I bought a white T-shirt and only later discovered the stamp (or ink) stain on my back - annoying - but a replacement would not have been worth it. So look in here: Coke, as reported here, was not in the house, but I would also be too suspicious. Spot paste from Li ... did not work.
Then I discovered an old OxiMittel: applied thick, dripped a few drops of water on it and "forgotten" for a few hours. Before going to sleep, just shake off powders - and lo and behold - the stain was gone! Then simply washed normally - blossom white result!