I have dark violet/brown hair with bright pink foils all through. This is done at the hair dresser and fairly pricey so I wanted to find a way to keep the quickly fading pink up to its fluro and bright potential.
I found it with Manic Panic. I got my mum to paint it onto my hair with her pastry brush (whoops) and then I left it in for hours. Not like you're supposed to but I had the same theory about longer = brighter. Eventually I washed it off outside with the hose and it looked incredible! The pink was right back to the colour it is straight from the salon!
Was very easy to apply - just make sure you do it outside and use gloves because that stains big time! Smells nice and feels good using something cruelty free!
You will need pre bleached in good condition hair to get the shocking colours. But that is much the same as any other bright colour dye.
I have been using different brands of hair stains for years but was never happy with the colour pay off or how long it lasted. Finally got around to buying Manic Panic and I love it! The colour is amazing.! It came out the same colour as it shows in the pot.
Before using this product I had dyed black hair and a pretty decent amount of dark blonde regrowth. A hairdresser lightened my hair using foils. I put the product through all of my hair and it turned out great. My foils are a bright beautiful purple and the rest of my hair - including my regrowth is a gorgeous purple tinted black.
Tips: Use gloves and Vaseline. Put Vaseline around your hair line and anywhere you tend to get dye when you do your hair yourself to reduce staining problems. If you are rinsing it out in the shower make sure to bend over so that the water doesn't run down your body otherwise you'll end up a very colourful person. If you manage to get your hands stained while dying or rinsing, spray them with hairspray and rub it in like you would when washing your hands with soap. Then wash as normal and it'll be gone! Also worked for my fingernails too :) I sleep with an old towel or pillowcase on my pillow as the colour transfers quite badly. Also have to be careful with what you wear