Apply color to your roots first. Hair that's been previously colored is porous and soaks up color easily, but new growth requires more processing time. Leave color on your roots for the full time and only process ends for half the required time. It'll give you a nice even color from root to tip.
Roots First: Start by applying the dye to your roots using a brush, making sure to cover any areas that are still dark. Blend the Ends: After covering the roots, gently apply the dye to the mid-lengths and ends of your hair. You can use the leftover dye on your brush to blend the colors.
For new hair regrowths, it is better to touch up the roots. Because if you colour through from roots to ends, the hair becomes successively darker, with the ends being darkest. If you have never coloured before, colour from roots to ends long as selected shades are not 2 shades lighter than your natural shades.
Roots generally process fastest, BUT it sounds like the rest of your hair has already been lightened, so it will not need as much time. So do your new growth before the previously lightened hair.
Avoiding Overprocessing -- Cutting off-dry or damaged ends before coloring ensures that only healthy hair absorbs the dye, leading to better results. Saving Time & Money -- If you color first and then cut off several inches, you're wasting both time and hair dye on sections that won't even be there after the cut.
Professionals always section hair into four parts – down the middle, and then from ear to ear across the crown. When you are ready to begin colouring, paint the colour on the front sections first because these are the most visible, so need the full processing time.
Flyaways and Split Ends: Another Side Effect of Breakage
Another significant issue that arises with coloured hair is flyaways and split ends. The very process of colouring your hair can weaken the strands, making them more prone to breakage, eventually leading to flyaways and split ends.
Most people do retouch roots every 4 to 6 weeks, and it's a good rule of thumb to make sure you don't go more than 8 weeks between sessions. This is because you want to make sure that your roots don't get any longer than an inch, and according to All Things Hair, hair grows about half an inch every month.
It's not your imagination — red hair dye does fade faster than other hair color shades.
Similar to the orangey issue above, when your regrowth ends up a shade lighter than the rest of your hair, it is typically because virgin hair reacts differently to dye than previously colored strands. The latter is more porous than regrowth and thus quicker to absorb color molecules.
Pick a lighter hair colour
A lighter colour will then look better. Your hair follicles produce less pigment as you're turning older. If there's no more pigment being produced in the hair follicles, your hair turns pigmentless.
Dyeing the hair in any way can cause damage to the hair through: changing the structure of the cuticle layer of the hair. breaking down protein in hair. loss of hair lipids.
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.
Applying the dye to your roots first is important as your roots are the least porous parts of your hair as they're least damaged, so they'll need extra colour processing time.
It's a good idea to give your roots the most time to absorb color—at least a 10 minute head start, 20 minutes if you have stubborn grays at your roots. But please remember that you should not apply color all over every time you color (see above).
If you want to distribute the hair dye evenly, do the shadow root technique or highlights, you should use a comb. You should choose the correct comb for each technique.
Red hair is notoriously difficult when it comes to upkeep. While it's the hardest color to fully strip from your hair, it's also the first to fade, often lightening drastically within the first few washes. So unless you're wanting to touch-up your own color at home, it would be wise to skip the scarlet shades.
Select a cool haircolor, like one with the word “ash” in the name, since it's less likely to turn brassy than one that's warm. If you gravitate toward warmer shades, don't worry; there are plenty of lighter haircolors, such as greige blonde, that provide a nice balance of warm and cool tones.
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.
It may not feel like it, but your scalp is always a bit warm, so when you are coloring your hair, the heat from your scalp can cause your roots to respond faster to hair color than the midlengths and ends.
Frequency and colour placement are key – If your greys are coming through thick and fast, then you may need to colour every 2 weeks (you won't be alone in this, believe me). The good news is you can use half a tube of colour with half a sachet of developer, for two roots-only colour applications.
Hair color products cannot lift or lighten a previously dyed hair color. Using more color will only make the hair darker. My hair is too light, can I try a darker shade? We recommend going darker gradually.
Comparing Permanent, Semi-Permanent, and Demi-Permanent Hair Dyes. Permanent hair color has the greatest potential for hair damage due to the chemistry involved and should be done most cautiously.
It's best to avoid washing at least 24 hours before dyeing. However, if your hair is really dirty, has a lot of product in it, or you need to shampoo for a special occasion, you can do that – as long as it's a one-off, you shouldn't see any long-term negative effects.
Box dyes often contain strong chemicals that can over-processed hair, making it dry and brittle. These chemicals can react unpredictably with other hair treatments, causing damage.