No: 5N - Light Chestnut

(Applied on Light Chestnut - color remains the same and covers grey hair)

5N can be used on the following colors to achieve a dark tone color:
3N - 4N - 5N - 6N - 7N - 4D - 5D - 7D - 8D - 4M - 5M - 7M - 4R - 5R - 7R - 8R - 7C

5N - Light Chestnut with 5% grey hair
If grey hair is all over the head you can use 5M, this will create highlights on the grey hair and Light Mahogany Chestnut on the rest of the hair. On more than 5% you must use this formula.

5N - Light Chestnut with 10% - 20% grey hair
Mix 25ml of 5N, 35ml of 5M, 60ml of glycol to get a Light Mahogany Chestnut.

5N - Light Chestnut with 30% - 50% grey hair
Mix 30ml of 5N, 30ml of 5M, 6Oml of glycol to get a Light Mahogany Chestnut.

5N - Light Chestnut with 60% - 100% grey hair Mix 45ml of 5N, 15ml of 5M, 60ml of glycol to get a Light Mahogany Chestnut.

This formula will apply for 5R (Light Copper Chestnut), 5D (Light Golden Chestnut).