The purple iris extract found in L'Oréal Paris' EverPure … 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). Make any shampoo a purple shampoo with these toning drops. Pravana The Perfect Blonde. It’s a special serum that’s formulated to tone any and all brassiness. 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. Foam format allows for the violet pigment to spread easy + evenly. An added bonus is how utterly delicious it smells. It’s pretty easy to … L'Oréal Paris EverPure Blonde Shampoo. All Amika products are pretty next-level … 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. 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. This is the purple shampoo that I am currently using and have had the …