I use the Hive perm kit and you cannot tint and perm with it on the same day. You need to tint 24hrs after, if you do it before the perm solution fades the tint.
I have heard of one called "curl up and dye" (great name) that you can do both at the same time, but I haven't researched it myself as I don't want to have to re-patch test everyone!
I haven't had many people asking for it themselves, but once you recommend it and they see the results they will usually have it done again for special occasions. :biggrin: Some people have better results than others, you just have to explain to people with short lashes that it won't make them look longer just more curled. My mum has very short straight lashes and it still looks good on her, some clients with long lashes however end up looking like they have dolls lashes-perfectly curled and beautiful- a real "wow" result.