For permanent and demi-permanent hair color it's black and red (even harder if your hair has been filled with red and then deposited with black, which is the standard procedure if you want to go from blonde to black and not let it fade to dark khaki green).
The hardest artificial hair colors to remove are typically bright, vivid shades like blue, green, and purple. These colors often contain strong pigments that can penetrate the hair shaft more deeply than other colors, making them more challenging to lighten or remove.
Blue pigment is by far the most long lasting (read: hardest to get rid of).
White is the hardest ink colour to remove. Why? Think about the colour spectrum. Black ink absorbs all wavelengths and retains the most heat, making it easier to break down with laser energy.
Generally, the following colors are known for their longevity: Deep Blue and Dark Purple: These colors often contain more concentrated pigments that can adhere better to the hair. Darker shades typically fade more slowly than lighter ones.
Darker hair colors like deep black, espresso brown, and blue-black tend to fade the slowest. These colors have larger pigment molecules that hold onto the hair better, making them more resistant to fading.
Fantasy Colors (Think Unicorn-Inspired): These audacious and vibrant shades, like neon pinks, blues, and purples, often exhibit the fastest fade. Their pigments come in larger molecules that wrestle with the task of penetrating the hair shaft, rendering them more susceptible to swift erosion.
Generally, reds, blues, and yellows are more susceptible to fading, with red pigments often being the most vulnerable. This is because these colors absorb more light, leading to quicker breakdown and fading.
Pantone 448 C is a colour in the Pantone colour system. Described as a "drab dark brown" and informally dubbed the "ugliest colour in the world", it was selected in 2012 as the colour for plain tobacco and cigarette packaging in Australia, after market researchers determined that it was the least attractive colour.
The red hair molecule is larger than other color molecules, so it doesn't penetrate the cortex of the hair as deeply as other color molecules.
An ammonia-free formula that contains plant-derived pigments and oils like jojoba and coconut oil, Phyto was the winner of the GH Beauty Lab's most recent at-home hair color test. It provided the richest, most uniform and truest color, and users found that it lasted longer than all others tested.
Garnier Nutrisse Ultra Permanent Colour
A natural-looking colour that effectively covers grey is what most look for at an at-home hair dye, and you'll find exactly that in this one. There's a wide range of shades to choose from too, from a Honey Blonde, all the way through to Infinite Black.
According to colorists, the main thing to consider when choosing a shade is that warm colors (like peaches, reds, oranges, and pinks) fade better and quicker whereas cool colors (blue, green, violet) will stick around longer.
Collectively, people with red hair were rated as most unattractive, but it must be noted that in the non-obese woman condition, red hair was seen as equal to blond hair in attractiveness, though in every other condition red hair was seen as significantly less attractive.
Use a clarifying shampoo
If you need to remove hair dye fast, reach for a clarifying or anti-dandruff shampoo. These are like a deep cleanse for your hair. The harsh chemicals in these shampoos will strip your hair of color. They work by stripping away not just dirt and oil, but also any unwanted hair dye.
While your natural hair color dictates the number of hair follicles you start with, the rate and likelihood of hair loss are largely unrelated to the color itself.
According to a survey conducted by YouGov in 10 different countries, the most popular color in the world is blue. Not only does this survey confirm it, but any other survey conducted for the most popular color also consistently reveals blue as the top choice. However, based on the demography, it might slightly change.
Then there's blue. It is said that this specific color reduces appetite and hunger. It is even called the most unappetizing color of all. That's because we do not see blue food that often, other than in foods like blueberries.
Learn about the significance of this annual announcement and how it influences design trends. The Pantone 2025 Color of the Year is Mocha Mousse! Pantone's color of the year sets the tone for color inspiration, trending colors, and design influences for the next 365 days (and sometimes even more).
Red tones are the quickest to fade from the hair, so your color can often lead to looking dull and lackluster.
As a general rule of thumb, darker colors tend to stay on the hair for longer. So, if you're adding lowlights, a root shadow or all-over depth, the shade will offer more mileage than, for example, light blondes, light browns or light reds. The same goes for pastel colors versus rainbow colors.
According to the survey, the majority of men (42%) found blonde hair to be the most attractive. This was followed by brunette (36%), red (16%), black (5%), and gray (1%).
If you are looking to add non-uniform streaks or subtle sweeps of color, balayage is a better option. The method offers your stylist more freedom to add color that fits and flatters your cut, face shape, and, of course, your personal style.