7N can be used on the following colors warmer tones: 4N - 5N - 6N dark tones: 4D - 5D - 4M - 5M - 4R - 5R
7N - Blonde with 5% grey hair If grey hair is all over the head, you can use 7D, this will create highlights on the grey hair and Golden Blonde on the rest of the hair. On more than 5% you must use this formula.
7N - Blonde with 10% - 20% grey hair Mix 25ml of 7N, 35ml of 70, 60ml of glycol to get a Golden Blonde.
7N - Blonde with 30% - 50% grey hair Mix 30ml of 7N, 30ml of 70, 60ml of glycol to get a Golden Blonde.
7N - Blonde with 60% - 100% grey hair Mix 45ml of 7N, 15ml of 70, 6Oml of glycol to get a Golden Blonde.
This formula will apply for 7N Blonde, to be mixed with 7D (Golden Blonde), 7D (Light Golden Blonde), 7M (Mahongany Blonde), 7R (Copper Blonde), 8R (Light Copper Blonde), 7C (Ash Blonde).