10 ways you're dyeing your hair wrong

These tips will save you from colour remorse.

By Carly Cardellino
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Hating your hair ​is a terrible and universal experience. It's bound to happen at least once in your life that you get a haircut that makes you cry or highlights that make your skin look a tinge green.

This happened recently to editor Elizabeth Narins, pictured above. She went to a hair colour appointment with zero idea of what she wanted, and she walked out of the salon hating her new colour. After hooking Elizabeth up with Rachel Bodt, senior colourist at Cutler Salon in NYC,​ to get her hair fixed, I made it my mission to keep other women from feeling as helpless.

Here are 10 common mistakes that could leave you hating your hair colour, and 10 ways to make sure you always end up with the hair colour of your dreams.

1. You're choosing a colour that's too dark for you. A good rule of thumb is to never go for a box colour that is darker than your eyebrows. Your arches are a good indicator of what your skin tone can handle when it comes to hair colour, so use them as a guideline.

If you do accidentally go darker than you wanted, Bodt suggests using a clarifying shampoo that will pull out some of the tone and lighten the hue. (Try KMS California HAIRSTAY Clarify Shampoo.) You can also use a sulphur-based colour remover called JoBaz Hair Colour Remover that removes the top layer of colour, or you can mix five drops of a dish soap with a quarter-size amount of regular shampoo to help strip the colour. To keep your hair from grabbing too much colour next time, coat your hair with coconut oil from the midshaft down.

2. You're trying to correct mess-ups on your own. Here's the thing: The more layers of box colour you use to lighten or darken your hair, the harder it is for a pro to fix later on. To mend your mistake the right way, try using a colour-stripping product like JoBaz Hair Colour Remover once or twice in a row, and if your colour still doesn't look like what you want it to, make an appointment with a colourist to price out a colour correction.

  1. You're trying to bleach your hair at home.** The thought of going blonde or even platinum is exhilarating, but if you're looking to lift your colour more than two shades, it should always be done in the salon, especially if you hair is darker than a dark blonde. In order to get the colour you're looking for, you need a lot of tools like heat and potent bleach.

  1. You're highlighting your own hair and it's turning brassy.** If you've been working on getting natural-looking highlights at home but your hair still turns an orange-y tinge, Bodt recommends using a violet shampoo to cancel out some of the brassiness. (Try bhave Bombshell Blonde Shampoo.) After you've washed your hair with a purple shampoo, use it every other time you shampoo to keep your colour true. She also says you can use a demi- or semi-permanent toner or gloss two to three weeks after you've highlighted your hair to tone your blonde strands. (Try John Frieda Colour Refreshing Gloss for Blondes.)

5. You're using henna to colour your hair. Henna is a direct dye that penetrates your strands and sits in the hair shaft, which is what you want your hair colour to do, Bodt says. But the downside is that you can't remove henna easily. If you ever want to lighten your strands after a henna dye, you could have a problem. It can also tend to appear too dark if you use it continuously. If you are going to colour your hair at home, opt for a semi- or demi-permanent rather than permanent dye that will fade in a few months. That way, if you're not entirely pleased with your colour, you're not stuck with it.​

related Cosmo's pop-up salon gives awesome hair with ~mystery~ product


Cosmo's pop-up salon gives awesome hair with ~mystery~ product

Cosmo's pop-up salon gives awesome hair with ~mystery~ product

6. You haven't decided what hair colour you want even though you're on your way to your appointment. The worst thing you can do is sit in your colourist's chair and say, "Do whatever you think would look good, since I don't know what I want." If you don't have a clear vision, you run the risk of ending up with hair colour that isn't what you wanted at all.

If you're not sure, Bodt advises on waiting to get your hair coloured until you know what you want. "You also need to know what it is that you don't want," she adds. Tear out pages from magazines or screen shot inspiration photos of people's hair and take your research to the salon with you. One colourist's idea of red might not be what yours is. Also, finding a good colourist is kind of like dating. The first person who does your hair might not be your hair match made in heaven, so be prepared to give a few people a shot.

  1. You're not telling your colourist your hair colour history.** It's important to tell your colourist everything you've done to your hair, including glazes, at-home or in salon colour, any temporary colorants — anything — because even it if was a year ago, unless you got a pixie cut recently, the remnants are still in your hair.

  1. You're not asking to get your hair fixed even though you don't like it.** So you got highlights, but they don't look like Gisele's, aka they're not what they wanted. If you went to a reputable colourist, what most likely happened is you didn't communicate what you wanted properly. So, call them up and politely let them know that your look is not what you wanted. Their goal is to make you happy and to keep you as a client, so don't be bashful in saying what you feel (nicely).

If the highlights were done too light, you can go darker or the colourist can apply lowlights to tone down the blonde. If the highlights aren't light enough, they can be amped up with more highlights and by toning down any brassy pieces, so you do have options. Usually, the salon won't charge you to have the colourist or another educator fix your hair, so it's a win-win situation.

  1. Your colourist made your hair too dark. (I grant you that this isn't something ​you *​are doing wrong, but it's still a common mistake, and it's fixable.) Much like the at-home options, colourists have access to sulphur-based products that are professional grade called Eliminate, which pulls off the last layer of colour and isn't harmful to your hair. There's also an ammonia colorant called Clear that can be used to lift and take the edge off of the colour. In this case, the colourist should also fix it for free, so don't freak out. Just communicate to your colourist how you're feeling and he or she will do whatever is needed to give you the hair colour of your dreams.

  1. You're sticking too long with a colourist who isn't the right fit. **If you told your colourist what you wanted, brought in pictures, and they still give you what you wanted, maybe take a break from that colourist. Not everyone will be right for you. If this is the case, ask to see someone more senior at the salon. Then, figure out exactly what it is that you dislike about your hair colour so you can get exactly what you want when your new colourist does your hair.