To avoid it going ginger or red then you must check what shade you are using. For example if the colour says golden, chocolate, mahogany, red, warm brown etc, these will all look 'ginger'. To achieve a rich colour, a basic shade must be added to create the depth (how dark it is).
Sun Exposure: Prolonged exposure to sunlight can lighten hair, sometimes giving it a reddish tint, especially in brown hair. UV rays can break down the pigments in your hair. Chemical Treatments: If you've used hair dyes, bleaching agents, or other chemical treatments, these can alter your hair color.
To neutralize the ginger tone in your hair you can use a blue toner or blue shampoo to help tone down the brassiness and get rid of the orange hue. Also applying a semi permanent shade that you like, like a cooler tone darker blonde will counteract the ginger tone.
Oxidation: Over time, hair can oxidize, especially if it has been previously colored or treated. This process can lead to a change in tone, often making brown hair appear more orange or red. Water Quality: Hard water, which contains high levels of minerals, can effect hair color.
Darker colors pull red because the underlying pigments in darker colors contain red. If you don't want to pull red you need to add green to your hair color or Ash tones.
Just as a purple shampoo neutralises brassy tones on blondes, using a blue shampoo on brown hair neutralises orange and red tones for brunettes.
To put it simply, brown hair can look red in the sun due to the UV rays having a “bleaching” effect on your locks, revealing the underlying red tones in your hair.
Try using a toning shampoo containing blue, purple, or green pigments to remove the red, orange, and yellow tones. Secondly, always wear a hat or use UV protectant spray to prevent sun damage, which leads to oxidization.
If you were unfortunate enough to end up with hair that is not only brassy but also has patches of orange or yellow, it's probably best to cut your losses and dye your mane dark again. Select a brunette hair dye that's either close to your natural color or dark enough to cover the orange, and breathe easy once again.
And what that means for your brown hair with highlights is that blue shampoo is the best way to knock out the brassy, red, and orange tones.
Darker hair is made up of several underlying pigments which give your brown, dark brown or black hair depth and dimension, and red and orange are the most dominant undertones. So if your at-home bleaching didn't remove enough of these red and orange pigments, the end result is orange hair.
Purple shampoo works the same way to eliminate brassiness on brown hair as it does on blonde. It helps to prevent color fade, while emphasizing shine, keeping brown hair vibrant and rich. Using purple shampoo on brown hair regularly will take out any unwanted warm tones in your strands.
Blue toning formulas can help counteract orange tones in the hair. The reasoning goes back to basic color theory: Shades positioned opposite on the color wheel are complementary and effectively cancel each other out when combined.
Environmental Factors: Certain factors like exposure to the sun can cause black hair to lighten, taking on a red, copper, or even blonde hue. Natural oils produced by the scalp may also interact with the sun's ultraviolet radiation to alter hair color over time.
What Causes Hair to Turn Orange or Red? “There are two primary causes of your hair color turning out too red or orange,” says Papanikolas. “Either the color you chose was too light, or you picked a color with warm undertones.
To avoid it going ginger or red then you must check what shade you are using. For example if the colour says golden, chocolate, mahogany, red, warm brown etc, these will all look 'ginger'. To achieve a rich colour, a basic shade must be added to create the depth (how dark it is).
Sun Exposure
"These tones can turn due to sunlight, washing with the wrong shampoo that doesn't protect colored hair, or a mistake made by a colorist, like not using a toner," says Rago. "The sun will dry out the hair by opening the cuticle on the scalp, which will lift the color out, causing the hair to look brassy."
If your hair is brown, you may need to bleach it more than once before you apply the grey dye. It's important you get your hair as light as possible before you attempt to turn it grey – this will help ensure a more even tone and vibrant, all-over colour.
Try a blue or purple toning shampoo
Yes, you read that correctly! Blue or purple shampoo can help your client get rid of the brassiness in their hair.
Sun exposure, hard water build-up, diet, and even certain deficiencies such as Vitamin B12 could be responsible for this color shift. Age, genetics, medications, stress, and diet can also induce changes in hair color, potentially leading to a red hue (source, source).
Basically whatever you do to your hair is going to stay in your hair unless you remove the pigment. Toner is a temporary solution, but will still be your best bet. to cancel red, you need a green base, and to cancel orange (brass), you need a blue based toner.
With hot roots, the hair color near your scalp is usually redder, and can appear orange. This can occur with any shade of hair color, from blonde to brown, redheads, even black hair color.