HOW TO MAKE MY HAIR MORE VIBRANT ???!!?!?

give it some time. hair color can actually take time to really kick in when it comes to being bright. i got platinum highlights a couple of years ago and for the first week it was dull and dark but after a couple of weeks it was extremely bright. If you go outside then let the sun's light soak into your hair. It naturally makes any color hair brighter. best of luck:)