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Can I bleach over box dyed hair?

If you’re considering lightening your hair, you might be wondering if it’s safe to bleach hair that has been previously dyed with box dye. While it’s always best to consult with a professional hairdresser, like those at our Abingdon hairdressers, here are some things to consider before attempting to bleach your box dye hair at home or in salon.

Firstly, it’s important to understand that box dyes contain a mixture of chemicals that are specifically formulated to produce a particular hair color. These chemicals can be difficult to remove and can leave the hair more porous, which can cause issues with further colouring or bleaching. In addition, some box dyes contain metallic salts that can react with bleach, causing a potentially dangerous chemical reaction.

For more information on hair advice, our helpful highlighting tips might help. Alternatively, check out our other blog posts for more.

Should I do it?

If you’re set on lightening your box dyed hair, the best course of action is to visit a reputable Abingdon hair salon where a professional Abingdon hairdresser can assess your hair and determine the best course of action. They may recommend a colour correction service, which can involves removing the box dye in a gentle manner and then applying a new hair colour or bleach. This process can take multiple sessions, and the hairdresser will carefully monitor the health of your hair throughout the process to ensure it doesn’t become damaged.

Alternatively, if you’re determined to attempt to bleach your box dye hair at home, there are some steps you can take to minimise damage. First, it’s important to choose a high-quality bleach product specifically formulated for at-home use. Consider a second opinion first. No Stylist is going to support the use of bleach, however if you are set on it they will consider the health of your hair above the desired colour first. For this reason, avoid any bleach products that contain metallic salts, as these can react with the box dye and cause damage to your hair. Additionally, you may want to consider doing a strand test before applying the bleach to your entire head, to ensure that your hair can withstand the bleaching process.


Regardless of whether you choose to bleach your box dye hair at home or visit a professional Abingdon hair salon, it’s important to take good care of your hair in the weeks following the bleaching process. Use a deep conditioning treatment regularly, and avoid excessive heat styling or harsh chemical treatments to prevent further damage.

In conclusion, while it’s possible to bleach box-dyed hair, it’s important to approach the process with caution. Bleaching can be damaging to hair, especially if it’s already been colored. For the best results, it’s recommended to visit a professional hairdresser, such as those at our Abingdon hair salon, who can assess the condition of your hair and provide expert advice and services. With proper care and attention, you can achieve your desired look while keeping your hair healthy and beautiful.