The purple iris extract found in L'Oréal Paris' EverPure … L'Oréal Paris EverPure Blonde Shampoo. For this, all you need is your existing shampoo, a teaspoon of baking soda, two drops of purple food coloring and two drops of blue food coloring. All Amika products are pretty next-level … Foam format allows for the violet pigment to spread easy + evenly. Make any shampoo a purple shampoo with these toning drops. bust your brass violet leave-in treatment foam Violet-pigmented, no-rinse conditioning treatment that keeps blonde color bright while providing an extra dose of nourishment to stressed locks. The shampoo provides a medium for the other ingredients to apply to the hair, the baking soda lightens, and the food coloring combats brassy tones (it’s all about color theory, folks). It’s pretty easy to … Pravana The Perfect Blonde. An added bonus is how utterly delicious it smells. This is the purple shampoo that I am currently using and have had the … It’s a special serum that’s formulated to tone any and all brassiness. It’s described as an ultra-violet, brass-busting shampoo that delivers bright and shiny, cool-toned results so you can use this on blonde, silver or grey hair.