Stargazer Semi Permanent Hair Dye Colour Rinse is the perfect way to add a vibrant and unique colour to your hair. This product is available in 1, 2 and 4 packs, and comes in the colour Royal Blue. It is easy to use and will last up to 8 washes. This hair dye is made with a gentle formula that is suitable for all hair types. It is free from ammonia and peroxide, so it won't damage your hair. The colour is semi-permanent, so it will gradually fade over time. To use, simply apply the dye to your hair and leave it for 15-30 minutes. Then rinse it out with warm water. For best results, use a shampoo and conditioner designed for coloured hair. Stargazer Semi Permanent Hair Dye Colour Rinse is a great way to add a unique colour to your hair without damaging it. It is easy to use and will last up to 8 washes.