How to black acid wash jeans.

  1. As far as I understand, when you buy pre acid washed clothes, it isn't done with bleach, it's done with a special type of acid. You have to be really careful or it will eat holes in the clothes. Bleach may just turn it a bit orange so I guess you have to be really careful how long you leave it on for.

    I've looked at a few 'how to' guides and some recommend chlorine although it is highly toxic and when gaseous dissolves you from the inside (ew) so I won't be trying that.

    This guide seems reasonably safe and pretty detailed. They all seem to recommend pumice stones.