Okay so in the hair coloring world, this term is thrown around a lot, and it is often seen as a villain in hair color. Yes, we want rich brunettes, cool blondes, and vibrant reds, but brassiness? No, we avoid the color like the plague. But what is brassiness? How do we identify it? How do we get rid of it? These are all questions that used to boggle my mind until I went to hair school and got a deeper education in hair color. Brassiness is not really a color in my opinion.
To me, brassiness is actually the tones that are left behind when hair is absent of it’s cool pigments. It is the leftover color of hair that lightener doesn’t lift. For darker hair, that leftover is red/orange (unless more than 4 levels of lift is achieved), and for lighter hair the leftover pigment is orange/yellow. That leftover color (true “brassiness”) looks bad because it’s not an actual hair color, but a hair color under construction. The right color must be placed on top of it.
Brassiness often appears in hair that not lifted enough to support a lighter color, and too much warmth shows through the color. Another scenario is when toner (a hair color tint) used to correct yellowish blonde hair doesn’t take or washes out. And as a general rule even permanent hair dyes eventually wash out exposing brassy color in the hair
In the end, I don’t think brassiness is the enemy of hair color, but it’s the con of chemically lightning and coloring hair. Artificial colors will eventually fade and change due to the daily environment (sun, wind, shampoo, chlorine)…and fighting this change in hair color has become unfortunately routine It’s with re-coloring faded color as a solution. It’s what hair colorists are here for and why as a business, there will always be repeat customers…I think it’s fine price to pay for our preferred hair color, as long as we give our hair a rest between color treatments.