Have you ever wondered how you’d appear with significantly different hair colours? That game of touching those silky and smooth hair samples at the front of the hair colouring boxes is one most of us have played before. As enjoyable as it is to think about different hair colours, we must be realistic.

We are not saying you shouldn’t go for pink if it’s your heart’s desire, but there’s a lot more to it than just buying a box of hair dye and apply it on your locks. One thing to keep in mind is that the colour you observe on the box or on the smooth sample strands may not be the colour of your hair.

Another thing… Although such boxes certainly make life easier, they often include some startling substances that you may want to reconsider utilising. There are alternative options for getting a beautiful hair colour without harming your hair or spending a lot at the salon.

Perhaps you got into a phone fight with your lover, or you got drawn into the latest episode of your favourite programme and lost count of the time. Whatever the cause, you may be wondering what will occur if you leave hair colour on your hair for an extended period of time. Please continue reading to find out!

box dye

What Are the Consequences of Leaving the Dye on your Hair for an Excessive Amount of Time?

If you allow the hair dye to sit in your hair for longer than the recommended amount of time without washing the hair after the allotted amount of time has passed, you run the risk of achieving a shade which is darker than the colour you desired, or even worse, brittle and over-processed hair that may look unnatural, a phenomenon known as the wig effect.

Even while this won’t cause your hair to fall out, it’s not a good idea to colour your hair and then leave it alone on your hair for a long period of time. If you continue reading, we will educate you on the consequence of this issue no matter what sort of dye or colour you could have used, and we will also give you some pointers and insights on how to deal with it in case you don’t get the timing just right.

Because we don’t know what kind of dye you have and we can’t tell you for sure what will take place. It all relies on the kind of dye that you’ve used, so let us give you an overview of the several scenarios that may possibly happen.

What happens if you leave semi-permanent hair colouring on for an excessive amount of time?

For Semi-Permanent Hair Dye

We have clients who have some experience with using a hair dye that is just semi-permanent. They purchased a new semi-permanent shade and were excited to put it to the test. It would seem that they dyed their hair with a semi-permanent product before beginning their activities to pass the time. They became preoccupied with another assignment and abandoned the project. As one thing led to another, they were taken aback when they suddenly became aware that more than two hours had passed since they had applied the colour to their hair.

As soon as they realised what had been done, they ran to the mirror and checked to see whether all of her hair was still in place. After the colour had dried into the hair, they rinsed it out, causing it to become wet once again. Even when they washed it, the hair maintained its position on her head.

How come her hair was fine despite the fact that they had completely lost track of time? Due to the fact that it was a semi-permanent dye. There is no peroxide or any other potentially harmful component in semi-permanent colours. These colours are also not permanent. Even if you forget to follow the instructions and wash it out at the end of the allotted period, your hair should be OK; nevertheless, you should take this information with a grain of salt since it is not guaranteed.

The colour that is left behind by semi-permanent dyes is solely on the layer of hair cuticle. The interior molecular structure has not undergone any changes as a result. Even while we strongly discourage you against leaving it on for longer than the prescribed amount of time, we can assure you that even if you do so for one reason or another, you won’t lose all of your hair.

For Permanent Hair Dye

On the other hand, it will be a completely different situation to be handled quite differently if it comes to permanent dye. It is essential that you do not forget and have to constantly keep in mind that you are putting this one on your head at any point throughout the process. To make permanent hair dyes, powerful chemicals are often utilized in the manufacturing process. They disintegrate the cuticle layer from the shaft of your hair, which makes it easier for the hair pigments to do their job.

If you want a darker tone, keeping it on for a longer length of time won’t help you reach that objective. Thus, it is very important to follow the instructions in the box to leave it on for the recommended amount of time and ensure that you follow the directions that come with the colour. If this happens, you run the danger of reducing the hair elasticity and dulling its lustre; after all, what use is hair if it isn’t healthy, strong, and shiny? You do not want to give the impression that you are one of those things that people display in the yards to celebrate Halloween that resemble dead bodies. Any person who wears such straw hair, with the probable exception of a scarecrow, will look unattractive or even a Halloween prop.

What happens if you leave black hair dye in too long?

For Black Permanent Hair Dye

Trying to attract attention with a mysterious black colour permanent hair dye? When you allow it to sit on your hair for too long, nothing will change; it will still appear black no matter how long you leave it. What? Do you believe that leaving it on for a longer period of time is a good idea? Nope, doll. Don’t.

Take, for instance, those hair dyes for guys that guarantee results in only five minutes. Poof! Absolutely no more greys. Give it to your partner to use, but advise him to keep it on for a longer period of time. After he washes it off, the greys won’t be covered any more effectively than if he had just followed the directions. Instead, the hair will turn out overly black like charcoal that appears fake, as though he is attempting to disguise the fact that he doesn’t look like his grandfather.

On the other hand, anything that will bleach the hair is a different situation. You should absolutely NOT dance with that partner. Keep reading because I’ll get into it farther down the page.

What happens if you leave red hair dye in too long

For Reddish Tone Permanent Hair Dye

The colour red may be challenging. They don’t always absorb well, which is why you may want to visit a salon if you want to go reddish tone if you want to change your hair colour. If you keep it on for a longer period of time, it may cause your natural hair colour to become even more prominent. If this is the case, you should begin by applying it to the ends of your hair, which are the lightest, and then go on to the sections that are naturally darker, which are nearer to the hair roots. However, some of you can have the reverse problem, where the lighter areas of your hair react well to the red as well as much more rapidly than the darker sections.

Again, using reddish tones will not cause your hair to drop out at the roots, but you should be prepared for the possibility that the results won’t be what you were expecting. Either it will turn out far too dark, or in certain instances, it could not even take at all. Both of these outcomes are possible.

What happens if you leave blonde hair dye in too long

For Blonde Permanent Hair Dye

And now, the answer to the question that you are all surely dying to understand (or should we say “dyeing” in this instance), which is: what happens to your hair if you leave permanent blonde hair dye on the hair for excessive period of time?

Although this isn’t the best scenario, the majority of box dyes are made to become inactive after around half an hour has passed. Even if you went more than an hour, it wouldn’t be ideal, but you would still have hair on the head even in that scenario. Will you still adore that hair despite everything? Almost certainly not.

Whether or if you use a bleach-blond dye rather than a conventional one is the determining factor in this matter. If it’s a bleachy one, the ends are likely to suffer substantial damage as a result. If this occurs to you, you shouldn’t attempt to cover it up with dye or use any other extreme steps. I would suggest getting in touch with your stylist first so that they can assess the matter.

For Darker Permanent Hair Dye on Bleached Hair Application

You need to realise that if you attempt to fix problems on your own, you could make them far worse. When you apply many layers of colour to hair that has been lightened or bleached, the hair becomes more porous, and as a result, it will not respond as well to the colours that you employ.

In this situation, one of two outcomes is possible. Either your hair will be lighter at the root and darker at the ends, or the reverse will be true. That’s not a terrible outcome yet, but you definitely don’t want to risk the alternative, which is the possibility that it may become a blue or murky green instead. Before you may experiment with deeper colours on hair that has had its original colour taken away, the underlying tones need to be reintroduced.

Because it is such a challenging procedure to make it perfect, such a colouring process should be left to professionals who have years of experience in the field. After all, the more often you colour your hair, the greater the risk that you pose to its health. When employing a dye that is meant to be permanent, this presents an extremely difficult challenge. Put the dye down and make an immediate appointment with your colourist. A trained professional can sort this out for you and preserve both the colour and the health of your hair, but they may want you to swear that you will never again subject your hair to such abuse. A professional should be able to and should accomplish the job of darkening light hair. If you attempt to handle the situation on your own, you will simply make it more difficult for yourself and the situation may become worse.

Hair Dye in Your Hair for Too Long without Achieving the Desired Colour

You may ask any hairstylist about the most frequent errors they see their customers make, and they will tell you. People have a tendency to believe that the at-home hair colour they choose will produce results that are identical to those shown on the packaging of the product. This is one of the most common misconceptions.

It’s nothing more than effective marketing, that’s all. You take a look at the beautiful model on the packaging and think to yourself, “Wow, I could look like that too!” Don’t lose sight of the fact that there is software like Photoshop that gives designers the ability to alter and improve their work. This is just one big brilliant show. Even the section of the box that depicts what your hair could look like after applying the dye is not the greatest predictor of how your actual hair will turn out.

Your hair could have the same natural colour as the samples on the box, but if it’s more porous, you won’t get the same results as someone whose hair has the same natural colour but is in better condition.

Oh, and what about those beautiful, smooth strands of displayed sample hair which we like touching in the retail stores? Do you know that it is fake white hair before it is coloured with the hair dye samples? We probably don’t need to inform you that it is fake hair since you presumably already know that it is artificial hair. Yes!

When looking for a lift in your hair colour, the best golden rule to adhere to is evaluate how dark is your hair as well as to make an estimate that it will be roughly three levels lighter than your present shade. This is especially important if you are colouring your hair at home. Do you have dark hair yet secretly wish you could be a blonde? That is not going to occur, at least not in a way that is satisfactory at home. If you want to transition from having dark hair to having light hair, you need to put some money aside so that you may go to a salon and have it done by a professional.

You might try putting a protein filler on your hair if you’ve been dying it or washing it too often and find that the colour doesn’t stay put. It helps the colour to stay there for a little bit longer, particularly those colours that are permanent. If you don’t want to do any further harm to your hair, this is an excellent option for you to consider. And please trust us, you don’t. Because the more hair damage you have suffered, the more upset you will be over it.

Damage is caused by chemicals. You need to exercise caution about the products you use and the frequency with which you use them. If you want to colour your hair in the most effective method, look for solutions that don’t include any harsh chemicals. If, on the other hand, you are unable to secure anything into your hair, you should probably simply schedule a hair salon appointment and ask for the advice of a professional. Once you repair your hair, you’ll have additional possibilities.

If you have accidently caused damage to your hair by leaving the box hair dye on the hair for an excessive amount of time, the first step is to repair the damage on your hair. The following are some steps you need to do in order to revitalise your hair.

Ways to Fix your Damaged Hair due to Prolong Hair Dye Issues

We have to advise you not to worry too much. Your hair is not going to drop. But it will be considerably more brittle and weaker. Thus, you need to have to baby the hair back to its usual excellent condition.

That means you need to:

  • Take care of and feed your hair some nutrients.
  • Steer clear of heat styling.
  • When you care for your hair, remember to be kind.
  • Snip off the hair ends that are damaged.

Utilizing coconut oil is an excellent method for providing your hair with the care and nutrition it needs. It is recommended that you use it two times a week, then cover your head with a shower cap and place a towel on top of your pillow before going to bed. If you don’t have any coconut oil on hand, you may use extra virgin olive oil instead. You are going to want to start by warming up both of the oils. However, you should not apply it to your hair if the temperature is too high. After it has reached a temperature that is comfortably warm, lather it on gently. If you do not want to keep it on all night, you should wait at least an hour before rinsing it off. However, unlike dye, putting nourish oils on the hair for prolong period won’t result in any negative side effects.

Another thing you need to avoid doing for roughly a month is using heat styling tools like a hair dryer, curling iron or flat iron. These things inflict a significant amount of harm on their own, and by doing this to yourself, you will just exacerbate the damage that you have already sustained. Even if you use a heat protectant spray (that you should NEVER skip applying whenever you use a heat tool; there are no exceptions to this rule!), you still need to get your hair back to a healthy state. Therefore, put those tools away till the beginning of the next month.

Let complete and utter affection into your hair. In addition, make sure you get lots of water and eat healthily. If it is attacked from the inside, it will be easier for it to repair from the roots up.

Above all else, be sure you follow the instructions that come with your hair colour!

That point can’t be emphasised enough by us. Colouring your hair at home should be alright if you want to get a shade that is comparable and close to your natural hair colour if that is the look you are aiming for. If you want to try anything new or more extreme, you should have it done at a salon by a trained professional first. We guarantee that this will avoid unneeded damage as well as the heartache that comes with having a terrible hair nightmare.

When you wash your hair, be careful not to pull or tug on it. This requires the use of a shampoo that is both nourishing and sulphates free. In addition, the conditioner you use should not include any sulphates and should be able to effectively moisturise and repair damaged hair.

And we are sorry to be the one to deliver this piece of unfavourable information, but if you overdid it with the colour and caused damage to your hair, you’ll need to face the fact to have hair ends getting trimmed. Your hairstylist may have to take out more than an inch of length if the damage is severe enough. If you have been attempting to lengthen your hair, this news may come as a disappointment to you; nonetheless, leaving hair that is fried and damaged is not an attractive appearance for anybody. It will continue to break the shaft apart, and when that happens, you won’t have any option but to lop off much more than you had anticipated.


If you leave the hair colour in your hair for an excessive amount of time, however, your hair will not fall out. It is possible that using a semi-permanent dye may make your hair colour appear fake; but, since it does not include any harsh chemicals, it will not damage your hair. Be wary of using permanent hair dye, in particular when you are trying to get a bleach blonde tint.

Always be sure to set a timer before you dye your hair in order for you to know when it is time to wash the dye out of your hair, even if you are preoccupied with other things like snacking, wedding, reading, preparations, or even over indulged in our favourite programmes!