The Crazy Color Semi-Permanent Renbow Collection comes in 41 vibrant shades and 5 pastel hues. Using this semi-permanent hair dye you get a vibrant color that lasts for 6-8 washes. Our renbow collection is 100% vegan and cruelty-free. All colors are mixable so you can create your custom color. For optimal results apply the dye to pre-bleached platinum to medium blonde hair.