Can You Bleach Over Permanent Hair Dye?

Can You Bleach Over Permanent Hair Dye? Yes, you can bleach over permanent hair dye, but it requires caution and proper preparation. Below are some frequently asked questions about whitening over permanent hair dye.

Bleaching permanent hair dye involves several essential steps to ensure optimal results without excessive damage. Here is a guide on how to use bleach to lighten permanent hair colour effectively:

Removing the current dye:

Use a colour remover to eliminate the existing hair colour. Follow the specific instructions included with the product for the best results.

Preparing the hair for bleaching:

Preparing the hair for bleaching:

Wash your hair with a clarifying shampoo to remove any buildup. Wait 48 hours to allow your scalp’s natural oils to build up, protecting the bleaching process.

Mixing the bleach:

Combine the bleach powder with the developer, following the recommended ratio in the instructions. Apply the mixture evenly to your hair, starting from the mid-lengths and ending with the roots.

Application and processing time:

Leave the bleach in your hair for the duration specified in the instructions, monitoring the lightening process to achieve the desired shade.

Rinsing and aftercare:

Rinsing and aftercare:

Rinse the bleach thoroughly, followed by shampooing and conditioning your hair. Consider using a deep conditioning treatment to repair any damage caused by the bleaching process.

It’s crucial to understand when not to bleach over permanent hair dye, as this process can lead to severe damage, mainly if your hair is already dry or brittle. Instead, explore alternative methods, such as colour removers, baking soda, shampoo mixtures, or clarifying shampoos, to remove permanent hair dye without using bleach.

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Can I bleach my hair over box dye?

Bleaching over box hair dye is possible, but the results may be less predictable than professional hair dye.

How long must I wait to bleach my hair after permanent dye?

It’s advisable to wait at least eight weeks after using permanent dye before bleaching. However, it’s best to consult a professional stylist for personalized advice.

Can you bleach over black hair dye?

Bleaching over permanent black hair dye is feasible but requires a colour remover first to eliminate the black dye.


The decision to bleach over permanent hair dye should be approached with care, considering the specific condition of your hair and seeking professional advice when necessary. By following the recommended steps and understanding the potential risks, you can safely achieve your desired hair colour transformation.