i always think this too!!
the other day i was at sainsburies and they had a little box with some conditioner for about 99p that was hair dye conditioner - i think it was red, and loreal. it was next to all the hair dye and in amongst the toner sachets.
Hi Cinderella16 - Could you write to the manufacturer of your particular hairdye & ask them ? I use L'oreal excellence & only use about a quarter of the conditioner they supply, so always seem to have some in reserve. As you say , they are excellent!