I bought Kiss Express Semi Permanent color a little while ago and plan on applying it with my wash this weekend...my question is, is it okay to mix it with a deep conditioner? Will the color still be as vibrant/effective?
I've used KISS for years and love it but have never mixed anything with it. For optimal results, I like to apply it to dry hair (which soaks it up like a sponge), rinse, then DC and skip the shampoo.