When you are working with hair this dark patience is your friend.  Make sure in your consultation that your client understands that they will be with you for a while! First I foiled out fine, thin slices with Framesi Decolour Blonding powder and 30 vol.  I let it process at room temperature for 75 minutes until I reached a level 9.  We toned with Eclectic Demi Permanent 9CT and left this on for about 10 minutes and washed it out with Tressa Watercolours Silver.  For home care we recommended using Tressa Watercolours to keep the Arctic look to the blonde highlights.  Click on Village Hair Studio to learn more about how we do things!