This product really does work!! My 15 year old daughter had been wanting her hair colored on the ends of her hair in the Pravana Neon Blue! I took her to a hair salon and they didn't have blue but they had pink the Vivids Magenta the stylist ask if my daughter had colored her and she hadn't done it in a lest 4-5 months so she said that was fine well anyway she put the pink in the ends of her hair and the first day it look beautiful and this was a Thursday but by Sunday the pink was almost completely gone!! I paid $55 and so I got on line look for the color product she used and saw that Pravana was one of the best and that you should put the pre lighting on hair first then the color so I bought the Neon Blue from y'all and then the Pravana Pure Light Power Lightener, I didn't get the developer crunched for money but I had some at home any way I put the lightener on her hair as directed and then then the Pravana Neon Blue on Thursday July 10th and it turned out BEAUTIFUL! It is now what 3 weeks later and yes the Blue has gotten a little faded but hair color does that but it still looks Pretty and I'd say it will stay in her hair probably another 2 or 3 weeks! If you are into the new bright vivids hair color Pravana is Really Awesome and so is the Pre lightener! I chose to get products from Sleek Hair because their prices compared to other sites was the cheapest and the delivery time was awesome! I will be buying soon from Sleek hair some more Pravana Neons Vivids different colors and more Pravana Pure Light power Lightener and developer because my younger daughter wants her hair done now! What is so great about these products is they Really work like they say and I'm just a mom not a Stylist I was able to do my daughter's hair cheaper at home and it last longer than going to where I went! Thanks Sleek Hair!!