A: Many suggest you should not use chemicals on your hair while pregnant, and there is a common misconception that it is dangerous. It is totally acceptable to use colours whilst pregnant; it is not harmful to you or your baby. Although there are chemicals in hair colours, the amount that could potentially cause harm is much more than the diluted amount that is in the common hair dye. The reason behind the misconception that colours can be dangerous is simply because your hormone levels are higher making it likely the colour could be affected i.e. coverage is affected, could go darker than normal, etc. You can take further precautions to ensure maximum safety, such as leaving colours on for the minimum required time and only applying highlights to the hair strand instead of the root. As well as this knowledge coming from our own stylists, it is also stated on the NHS website.