Dark brown hair Bleach?

But i see their is some very smart people here that knows there Colors

i have dark brown hair i regularly use " Kaleidocolors with pure white vol 20"

 

But i didn't this time i went out to " Sally Beauty supply"

i told them i just want to hi light my hair but i problemly end up coloring my hole hair.

 

I just want to go 1 level Lighter with my hair to a median toned Brown

They give me "Blonde Brilliance The Professional Kit" will this work for the tone i want i already Bart the product

 

Once i got home my friend said do not use Blonde Brilliance it's bleach hight light streak or frost but it will damage my hair she said  make it look all drayed out she said i need to do is buy Blonde dye and a vol 30 developer in order to get to that brown i want and for my hair to sill look heathie is this true?

What do you all think?