On Fri, 24 Sep 2010 04:14:40 -0700 (PDT), Tabby
wrote:

On Sep 24, 12:18*pm, ".newman" wrote:
My champagne coloured acrylic bath has a couple of dark stains, probably
caused by hair dye. I have tried bleach and other household cleaners
without success. Anything else I could try?

Regards

If you really cant find any info on google, the following clean many
things off:
paraffin
ammonia
caustic soda
various acids, eg sulphuric, HCl, etc
cream cleaner


Angle grinder.

--
Frank Erskine