Under-mixing the dye.

The next mistake to avoid is under-mixing the dye. We all know how important it is to mix our hair colour well, but how long should we be mixing? To get a perfect result, you want to leave the mixture for 5-10 minutes. This allows enough time for the chemicals to react and produce a consistent shade of colour. If you don’t give your mixture enough time (or if you don’t mix it well), then your hair will be uneven in tone and patches will appear where the reaction hasn’t taken place properly.

Forgetting to use gloves.

One of the most common mistakes people make when dying their hair is forgetting to wear gloves.

There are several reasons why gloves are necessary when coloring your own hair at home, and they include:

• Protection from stains that can be difficult to remove from the skin, particularly if you have sensitive skin or eczema.
• Protection from potential allergic reactions in case of an allergic reaction or sensitivity to the dye ingredients used in your colour.

Gloves will prevent stains on your hands if you have a tendency to touch your head/scalp while applying dye or within minutes after applying colour (when wet colour is still on). If you don’t wear gloves, any staining can be hard (or impossible) to remove later. Also remember that even after drying for hours after application, wet dyes can stain surfaces such as countertops and sinks!

Starting with a patch test.

There are a few reasons why you should always do a patch test before applying any hair colour to your whole head. The most important reason is to make sure that the colour doesn’t irritate your scalp or cause an allergic reaction. If the product causes an allergic reaction on one part of your head, it may also cause problems in other areas if used on all of your hair.

Another good reason for doing a patch test is to make sure that the shade of colour suits you! It sounds obvious but sometimes people forget about this until it’s too late!

Not following the instructions.

The first step to avoiding mistakes when coloring your own hair at home is to read the instructions. This may seem obvious, but far too many people skip this step and make all sorts of mistakes instead. It’s best to repeat the instructions as you do them so that you don’t forget anything important along the way. Don’t just guess what it is that you’re supposed to be doing—read all instructions carefully before starting work on yourself or anyone else!

Avoid watching videos while trying DIY hair colouring at home, especially if it’s your first time; if something goes wrong, you won’t be able to focus on anything else until after it’s fixed… unless of course there has been a disaster like burning yourself with boiling hot dye (which happens more often than one might think). If this does happen then call your doctor immediately because burns can get infected quickly if not cared for properly! Also keep in mind while reading these tips: don’t try making things easier by skipping steps or taking shortcuts – this will only lead down paths which we’ll discuss later…

Using a color that is too light.

Using a color that is too light can leave you with a brassy blonde or red hair that looks like you’re ready for the beach. If your goal is to have a new look, this might not be the worst thing in the world, but if you want to go back to your natural hair color, it can be a real bummer.

To avoid this problem:

Make sure that you choose an appropriate shade based on what your natural hair color is and how dark it is. For example, if your hair has been colored before with dark colors such as black or blue-black then use something lighter like golden brown instead of chestnut brown or red maple (the latter two colors will make your hair look even darker).

Use multiple shades of dye instead of just one bottle so that they blend together seamlessly rather than looking patchy. Apply them separately using gloves and plastic wrap around each section while they process according to package directions – this will prevent any over-processing because some parts may take longer than others due to their density level being different from other sections (for example: roots are thinner than ends).

Not buying all of the necessary materials.

You should have everything you need before you start so that you can concentrate on the job at hand. If there is anything you forget, don’t rush out in the middle of your project to buy it. You will be distracted and probably end up with a botched look because of this. Also, improvising or trying to use other people’s stuff is bad news—it can ruin your hair colouring results and make them very patchy looking (not to mention unsafe). Make sure that everyone who comes into contact with your hair throughout the process wears disposable gloves; otherwise they might contaminate your product!

Leaving the dye on for too long.

When you leave the dye on your hair for too long, it can cause a lot of damage. The hair will be dry and brittle, losing its shine and becoming more likely to break or split. If you want to dye your own hair at home, make sure you keep an eye on the clock so that you don’t leave it in for longer than recommended!

Using bleach on all of your hair (if you don’t want to).

When you’re using a hair color that’s much lighter than your natural/current hair color, it’s best to opt for a semi-permanent dye. Semi-permanent dyes are less damaging and more effective at getting you the exact shade of blonde or red that you want.

If your goal is simply to lighten up the few grays in your hair without bleaching all of them (or if would like to maintain some of your natural color), try using a lightening shampoo like Clairol Natural Instincts Silver Lights Shampoo ($10). This product will help lift those stubborn grays but won’t strip any other color from your strands.

Forgetting to shampoo and condition afterwards.

It’s important to remember that after you color your hair, you should wash it as soon as possible.

The shampoo and conditioner that you use will help keep your hair healthy and strong. You can use any brand of shampoo and conditioner that you like! Just make sure that you use a good quality product so that it will work better for you.

Conditioners have many great benefits for colored hair, such as:

• Moisturizing dry strands of hair by locking in moisture from the shower or bath water; this helps prevent frizziness during styling processes such as blow drying or flat ironing while also protecting against heat damage which causes brittle ends over time! Great tip: If you have short pixie cuts like me – don’t forget about those layers! They need extra TLC too 🙂

Failing to trim off any split ends before you start dying your hair.

It’s important to remember that split ends are a source of breakage. If you’re new to trimming your own hair, it’s best to use a sharp pair of scissors and trim off small amounts at a time. Do not over trim! It’s better to have a few split ends than none at all when it comes to protecting the integrity of your hair.

For those with thicker or longer hair types, I recommend doing this every six months or so (depending on how often you shampoo). For those with fine/medium thicknesses, I suggest doing this once per year (again depending on how often you shampoo).

When dying your hair at home, make sure you follow proper procedures and give yourself plenty of time and space to work so that you don’t end up making a mistake

When dying your hair at home, make sure you follow proper procedures and give yourself plenty of time and space to work so that you don’t end up making a mistake.

• Get the materials ready: You will need gloves to protect your hands from dye stains. Do a patch test on an inconspicuous area of skin first (like behind your ear) to check for allergies and reactions before using the dye in its entirety.
• Read the instructions: Read through all of the instructions before starting so that you know what’s required, how long it takes, potential risks associated with certain types of dyes (such as bleaching), etc.
• Buy all the right materials: Make sure to buy everything that is specified in any given recipe or written instructions before starting—this includes things like shampoo, conditioner and foil packets if they aren’t already included in an existing brand (for example Clairol Natural Instincts which comes with its own packet).