I purchased these for my daughter for Christmas but have used them more myself.
Their really easy to use and apply to your hair.. You apply to dry hair and leave to dry. No need to add anything extra to lock colour in.
I've got blonde coloured hair at the moment so these go well and the colour stands out fantastic on my hair and looks good.
I've found using them in my hair the colour stays for 2-4 washes but fades with each one.
Great for extra colour that's not long lasting, perfect for nights out and party's