i don't actually have a bar of zest near me, but i did just look up the ingredients on a few different sites online for ya, and there are a lotta different chemicals in it that i personally wouldn't feel real good about. i think the rule of thumb around here is if you can't pronounce it, don't put it in your hair..lololol i personally would think your better off using an all natural soap, you won't have to worry about anything if ya do^^
honestsly..my 1st set i started with ivory soap..and it worked but wasnt gret at all but that was a goood long toime ago and didnt know alot then...dr btonners or something natural and residue free is by far gest but actualy that stuff thats basicly water and baking soda is amazing zest i think would have alotta residues and crap.
