I bought this hair dye today called jazzing clairol hair dye and on the bottle it says that i have to use heat while waiting 30 mins so do u think i can use a hair blowdryer for it to show in my hair?

well yeah ... what else would you use ?

um yeah
i think that'd be the tool haha

unless you have a heat lamp to sit under lol

I've never heard of an at-home hair dye telling you to use heat.

but..well..the hairdryer's the best thing to use.
Wouldn't it dry up the dye, though?

Sit in the sun or steam up your shower.

Also, after applying the dye, you could put your hair in a plastic cap and then wrap a towel around it. The towel insulates all the body heat in your head so that could work too.