Lifting hair but grey coverage help

[Hailskay]

My client is a natural 5 with a lot of grey through the front,apologies I'm shocking at % ratios I'd probably say 50% as none through the back.any way wanting to lift to a 7.we usually do pre lightener in foils through the top but wanting to flood 7 Inbetween foils.im thinking illumina /7,7/81 with 7/7 as she doesn't mind having a little warmth,through the back I'll use 9% my question is I'm worried 6% won't lift her natural 5 but will cover the grey,heres a pic of her hair so you know what I'm jibbering on about

so should I use 9% through it all then use 6% on grey areas?x

 

[cassies97]

Yeah you should be fine with the 9% shes only about 10% in the front.

I can't really judge on the back though as i can't see it!

 

[Hailskay]

Yeah you should be fine with the 9% shes only about 10% in the front.

I can't really judge on the back though as i can't see it!

Thankyou it's all natural no grey through the back so that's great I'll use 9% throughout [emoji4]

 

[cassies97]

Thankyou it's all natural no grey through the back so that's great I'll use 9% throughout [emoji4]

Yeah you'll be fine with the 9% it'll just be less intense on the white hairs.

I use 9/43 and 7/43 and 9% on my mum who is a 6 with 15-20% white and it lends for a lovely natural look with highs and lows.