You shouldn't dye your hair more frequently than every two or three weeks. The problem is when you're going blonde you can see your dark roots after a week, but if you color your hair every week, then you will see damage.
Root care 101
Ideally, you should be visiting your stylist for a root touch up every 4 to 6 weeks, and no later than 8 weeks. This isn't purely because it'll look better, but for biological reasons, too. Your scalp gives off heat, and this heat won't extend much further than 2 centimetres past the root.
The most important thing you can do is wait two weeks before using the color again to avoid irreversible damage to your hair. Remember, you could always try to wash your shampoo a few times, if you used a semi-permanent color that didn't look that great, so that it fades and becomes lighter.
Re-dying the entire length of your hair can be done safely about every 8 weeks, but if you simply want to make a tonal change – warm it up or cool it down – there are less permanent – and non-damaging – options such as glazes or toners in the semi-permanent color category (more below).
It could be that your hair is resistant to tint, especially when the hair texture has changed as a result of going white. But also it could be that by going lighter, either all over, or by introducing (subtle) highlights you would not see the regrowth strip quite as quickly as if it were lighter.
But generally, every 4-6 weeks is a standard time between colorings. It really depends on a number of factors, like if you're changing colors, getting a new color, what type of hair you have, and which products you use.
Dyeing your hair again the same day can cause significant damage to your hair and also your scalp. Typically, you should wait 6-8 weeks to dye your hair again after the first time. Hair dye has a lot of harsh chemicals in them that are applied to your hair and scalp.
Generally speaking though, it's best to wait 4-6 weeks before having another color treatment – in most cases, this is enough anyway and reduces the risk of hair damage. There are some exceptions, but in general, it's better to err on the side of caution and wait for this long.
Generally, it's safe to re-dye every 6 to 8 weeks. Permanent hair dye lightens the hair and deposits color.
These highlights go all the way to the root, and the dyes used to do touch ups are actually affected by the body heat coming from your scalp. That means, if you have more than an inch of hair to touch up, the colour may look inconsistent. For this reason, you should plan to have your roots touched up every 4-6 weeks.
"You will have to grow your roots at least 1-2 inches. That means you will have to wait anywhere from 2-4 months to allow your hair to grow an inch or two.
Most people schedule root touch ups four to six weeks apart. If you've asked your colorist how to go about breathing life back into your dull strands, your colorist may have recommended hair glaze/gloss/balancing.
Re-dye often, but not too often. Your hair shaft is delicate, and should only be dyed once a month or so. Any sooner than that and it will be prone to breaking, splitting, tangles and straw-like texture. Deep conditioning treatments used in conjunction with any color service are always recommended.
And that's best done at the salon. But if you do still want to try dye it again, go for it. It's not recommended to dye it that often in such a short space of time, but it won't do any real harm. Just make sure you do condition it properly etc, just to be on the safe side.
Depending on the condition of your hair, you should be able to safely re-dye it every few weeks to a month — or in about 4 to 10 washes. But remember that moderation is key. Don't attempt to layer lots of colors within a matter of weeks — you need the existing shade to wash out first.
You cannot just easily color over a previous color without having problems occur. However, it's much easier to color from a lighter color to a darker one. Say if you have light brown hair and you want to go to a dark brown. That situation would actually not cause much problem.
If you have medium or high porous hair, your hair has trouble keeping moisture which, in turn, causes hair color to fade faster. It can't lock-in the dye. If your hair always feels dry, it may be because it's porous. Try adding more hair oils, creams, and conditioning treatments to your hair care routine.
The use of bleach produces a colouring effect by oxidizing the hair follicles. This not only damages the natural state of the hair but also removes the moisture from the hair follicles. Moreover, it can further lead to dryness, breakage, and split ends, which can cause hair loss.
Hair dye does not stop or even slow down hair growth, but it can cause hair loss by damaging the color-treated hair. The chemicals in hair dye can cause some of the damage.
Shampooing Too Often After Coloring
Depending on whether your dye is temporary or permanent, your color may last anywhere from 6 to 30 washes. For those who wash their hair multiple times a day or week, this means your hair color may fade faster. The solution is simple – wash your hair less to save your color.
General Tips When Coloring Your Hair
Hair coloring sessions should be around four to six weeks apart. This is to prevent your hair from becoming brittle and weak. During this time, it's recommended to refresh your hair with conditioning treatments such as masks to keep your hair healthy.
Hair grows from a root at the bottom of a follicle under your skin. The blood in your scalp goes to the follicle and supplies oxygen and nutrients to the hair root, which helps your hair grow. As your hair grows, it will push through your skin and pass by an oil gland.
Rescue your roots in between colorings. This 10 minute permanent hair color root touch up is a low ammonia color gel with built in conditioning and an aromatic scent. Magic Root Rescue is recommended to cover gray hair for root regrowth of less than three weeks.
A root touch-up is simply an application of hair dye to the roots of the hair, to disguise the fact that hair has grown out, and to make a hair coloring last longer. Root touch-ups may be done at a salon or at home.
Ideally, you should be visiting your colourist for a root touch up every 4 to 6 weeks if you have a global colour such as a white blonde scalp bleach (otherwise known as pre-lightening) This isn't purely because it'll look better, but for scientific reasons, too.