Can I dye my hair when I have alopecia? The short answer is yes. The part of the hair that is coloured in the dyeing process is the hair shaft. Dye doesn’t reach the hair follicles which is the part of the hair we are most concerned with when looking at alopecia. However, dyeing hair can cause hair loss if the hair shaft is weakened with prolonged treatments (most commonly damage occurs when taking hair from a very dark colour to a very light colour). Some people with alopecia choose to colour their hair and find a change in hair colour can help boost confidence and even help to make the hair loss less noticeable. If choosing to colour your hair, always carry out the sensitivity patch tests when using home dye products even if you have used the product before (skin sensitivity can change with alopecia). For best results, consider a salon treatment.