Yes, permanent hair dye can permanently change your hair colour.
Understanding Permanent Hair Colour
Permanent hair dye works by altering the natural pigment of your hair deep within the hair shaft. Unlike temporary or semi-permanent dyes that simply coat the surface, permanent colour involves a chemical process that opens the hair cuticle to allow the dye molecules to penetrate and react with the cortex, where the hair's natural colour is located.
Based on hair care information, this process leads to a lasting change. As described in the provided reference, the method involves specific steps:
- The process opens up the hair shaft.
- This allows the dye to be embedded deep within it.
- The result is completely changing the colour of your hair, permanently, until that hair grows out.
Therefore, once the dye is applied using this permanent process, the colour change in that specific strand of hair is permanent. The visible "permanence" on your head lasts until the dyed hair strands grow out and are cut off, and new, un-dyed hair takes their place at the roots.
Key Takeaway: Permanent hair dye creates a chemical change inside the hair fiber, making the new colour resistant to washing and truly permanent for the life of that particular strand of hair.
