Peroxide free tint

[TheBeautyRoomClinic]

hi guys, anyone using peroxide free tints? What do you think of them compared to regular tints? Do you think the colour lasts just as long? I have been using the Marvelbrow system for a little bit I personally find it takes a bit longer to get the desired colour, I have had one client say it didn't last as long as regular tint, does anyone have any tips when it comes to application to get a longer lasting colour
Any helpful advice would be great thanks xx