It doesn't stay forever which is a good thing IMO
Atomic pink really does glow in the black light. I went to Disneyland and on the Winnie the Pooh ride  my pink highlights were a glow. It doesn't stay forever which is a good thing IMO. I had put way too much and after a few washes got it to where I liked it. A little goes a long way and I haven't even made a dent in my bottle yet. I wanted the sold out cupcake color so I just mixed this with conditioner and it all worked out well.
Rating: 4 stars