W7 hair chalk quickly and inexpensively transforms your locks with a shot of vibrant neon colour choose from pink orange green or blue or use more than one colour for a funky rainbow effect perfect for partying and festivals the semi permanent colour livens up your look instantly even glowing under uv light before washing out easily with your usual shampoo r r create instant neon colour with hair chalks available in pink orange green or bluebest results are achieved on fair hairplace s