Hi,
I use a wide range of waterbased inks that are all non harming.
You could try Neptune Textile inks or Permaset inks. Both I use with great success. They are both air curing so there is no need to run expensive dryers which waste eletric and money.
If you would like to know where to get the inks from, drop me a line.
Best Regards,
Matthew Riches
01473 399377