Purple vs. Blue Shampoo: It’s More Than Color Theory, Here’s Why

The Difference Between Using Purple Vs. Blue Toning Shampoo PSA: You should NOT be using purple and blue-based shampoos as a shampoo replacement. These ultra-concentrated (ultra-life savers) toning shampoos serve specialized purposes beyond basic color theory.   If you're turned off to corrective color shampoos or just unsure how to incorporate BOTH purple and blue variations into your backbar, we have three tips from blonding specialists that will pull you to the dark (light?) side.    1. Purple & Blue Shampoo Are Not Standalone Products, Here's Why Toning shampoos need to carry the same urgency as toners—work quickly, saturate...