Hi,
You need to search on the HAIR forum.
There's lots of info about TIGI copyright colour on there from hair geeks that use it.
Have a read through the threads and if you have any particular questions, just post a query but make sure it's in the Hair forum as not all geeks read the Consumer Queries forum where you've posted this message. That way, you're more likely to get more responses.
Happy Geeking!