Pro Tip: Use Reincarnation Bond Restoring Mask once a week to hydrate, nourish and protect your strands. May leave a blue/green residue. Use our Rosé Shampoo to neutralise any leftover blue/green tone. Effortless Hue: Generously applying it to clean, towel-dried hair. Leave it on for 30 minutes before rinsing. Make sure to follow all instructions provided. One bottle is perfect for short hair or coloring freshly bleached and toned roots. All BLEACH LONDON products are Vegan and PETA-Approved formulas. No bleach, ammonia or parabens. Perform a skin sensitivity test and a strand test 48 hours before use to make sure the product is suitable for you. Suitable for all hair types. Washed Up Mermaid Super Cool Colour works best on cool light blonde hair that's been lightened and toned with White Toner. The unique colour shows up more blue on white blonde hair and more turquoise on warmer blondes. I washed up like this! Washed Up Mermaid Super Cool Colour is semi-permanent colour cream that creates a vibrant, aquatic blue look that lasts between 2-50 washes.