Absolutely in love with this collection. I used to bleach my hair and greys to get this vibrant blue but no more!!! It covers my greys and doesn’t fade. So happy I found this colour system. I bought the Elumen colour system for my grey hair, fully expecting it to face after two shampoos and it hasn’t! The colour, Lock, shampoo and conditioner work exactly as advertised. My grey hair still has vibrant colour.