Hi Scott, I too hate to jump on the band wagon and ask for advice, but would welcome any you can offer.
I used colourb4 (xtra strength) on very dark brown dyed hair and it worked lovely, leaving me with a lighter colour. I decided to use light brown over it, but my hair went very dark again, so I used colour b4 (XS) a week later and again I got a lovely light brown colour. I decided not to re-dye straight away, like Aimee I too noticed that my hair got darker with each and every wash, again not quite as dark as it was but still considerable darker than when I first did it. (this was back in November)
i note your comment to Aimee about re-oxidizing, I used Loreal experte colour limnio shampoo and conditioning masque. If I re-do another colourb4, how can I prevent my hair from going darker, anything you recommend.
Sorry Scott, one last thing, does this product remove permament hair dye - i only used it on semi-perm?
thanks scott xx