Clairol Nice ’n Easy Medium Ash Brown Non Permanent Hair Dye 77 gives you natural-looking, multi-tonal colour and locks it down for up to 24 shampoos. This semi-permanent hair dye comes with ColourSeal Conditioning Gloss to help keep your colour looking just as good as it did the day you dyed it for as long as possible. Features Semi-permanent. Natural looking colour. Lasts up to 24 washes.