I have lots of grey hair that are very resistant to dye. Some home colours wash out of the greys after only three or four shampoos. My natural colour is med-dark brown and for this application I did 2 parts 4R (an auburn tone) with 1 part 6N (dark blonde) I used 20 volume developer and let the colour sit for 40 minutes. It gave me a nice deep auburn colour with full grey coverage that has lasted many weeks. The red tones have not washed out, nor was there bleeding of colour after my first shampoo. I highly recommend this product.
These reviews are the subjective opinions of ChickAdvisor members and not of ChickAdvisor Inc.