NATURTINTHair Dye Light Ash Blonde 170ml

Hi Ladies, could anyone tell me will this hair color cover white hair, and is this chemical free? How long will it last? Thanks in advance!!!!

I see Naturtint has to be "all used", you can't just mix as much as you want, and save the rest for touch ups...anyone done this anyway??

What is the percentage of para phenylenediamine ppd in this product

Is this package for 5.98 oz or 9.28 oz? package on picture says 9.28 oz