This is my go-to product!

Splat hair colour is more of a stain. Use with caution as it dyes everything it touches! It is water based so you may leave it in for as long as you'd like. I leave mine in for 18-19 hours and it lasts for months! I love it :)

finally a fun colour that lasts

I have tried endless fun colour home dye kits and they always faded out after 1 wash even if it was supposed to last up to ten etc
I tried splat and 3 weeks later my hair is still a beautiful purple.
I highly recommend this to anyone !!!