How do you use Solfine Crema color hair dye?

I need some help with using this paticular hair dye ‘Solfine; Crema Color’ Coffee/cafe color – I’m not sure how to use it neither do I know how long to leave it in for… if any one can give me any instructions it would be helpful :) thanks!

ps: I’ve already bleached my hair blonde but its not a good blonde color so i need to make it darker.