Many clients visiting salons in Tweed Heads and Coolangatta ask the same question — what causes grey hair, and why does it seem to change in texture and behaviour over time?
Understanding the science behind grey hair helps explain not only why colour fades, but also why hair begins to feel different, respond differently to colouring, and require a more refined approach over time.
So what actually changes in the hair as it turns grey, and why does it feel so different?
What Causes Grey Hair?
Hair colour comes from a natural pigment called melanin, which is produced within the hair follicle.
There are two primary types of melanin involved in hair colour:
· Eumelanin, responsible for darker tones such as brown and black
· Pheomelanin, responsible for lighter tones such as blonde and red
The balance of these pigments determines your natural hair colour.
As we age, the cells responsible for producing melanin gradually slow down and become less active. This process is largely influenced by genetics, which is why some people notice grey hair earlier than others.
Over time:
· Melanin production decreases
· Pigment-producing cells decline
· Hair begins to grow without colour
Once this happens, the hair appears grey, silver, or white depending on how much pigment remains.
In most cases, this change doesn’t happen evenly. Many people first notice grey hair around the front hairline or parting before it gradually becomes more widespread.
Melanin in Hair vs Skin
Melanin is responsible for both hair colour and skin tone, but it behaves very differently in each.
In the skin:
· Melanin production can increase with sun exposure
· Skin can adjust its tone over time
· Pigment-producing cells remain active
In the hair:
· Melanin production gradually declines
· Once it stops, it typically does not restart
· Hair continues to grow without pigment
This is why skin can tan or regain colour, while grey hair is usually a permanent and progressive change.
Why Grey Hair Behaves Differently
Grey hair doesn’t just lose colour — it also changes in structure, which is why it often feels different.
As melanin declines, the hair fibre begins to change:
· The surface can become more irregular
· The cuticle can become more resistant to colour
· Natural moisture levels can decrease
This is why grey hair may feel:
· Coarser or more wiry
· Less predictable when colouring
· More resistant to absorbing tone evenly
As these changes become more noticeable, many clients begin looking for more natural solutions such as grey blending, which works with the hair rather than trying to fully cover it.
Without pigment, grey hair also reflects light differently. This can sometimes make it appear dull or uneven, especially under certain lighting conditions. It is one of the reasons why traditional colouring techniques may not deliver the same results as they once did.
Professional Care for Grey Hair
Because grey hair tends to become drier and more resistant over time, the right home care plays an important role in maintaining both condition and appearance.
Professional ranges such as Kérastase are designed to support moisture, softness, and manageability in ageing hair.
The Nutritive range, for example, helps to:
· Restore hydration
· Improve softness
· Reduce the coarse feel often associated with grey hair
When combined with in-salon techniques, the right care routine helps maintain a more refined and natural result between visits.
How Grey Blending Works With the Science
Rather than trying to completely cover grey hair, modern techniques are designed to work with these natural changes.
Grey blending focuses on:
· Softly integrating natural grey into the overall colour
· Using techniques such as highlights, lowlights, or balayage
· Reducing harsh regrowth lines
· Creating a more natural, lower-maintenance result
For a clearer understanding of the process and what to expect over time, understanding how to transition to grey hair can help you plan a smoother, more natural journey.
Because every client’s hair is different, achieving the best result always comes down to a personalised approach that considers your natural tone, hair condition, and long-term goals.
Why Understanding Grey Hair Matters
Grey hair isn’t simply about losing colour. It involves changes in:
· Pigment
· Structure
· Behaviour
Understanding these changes allows for better decisions and more natural-looking results, especially when choosing techniques that work with the hair rather than against it.
Ready to Work With Your Grey Hair?
If you’re starting to notice changes in your hair texture, colour, or manageability, the best place to begin is with a personalised consultation.
At Salon Maggie G, we assess your level of grey, hair condition, and long-term goals to create a result that feels natural, refined, and easy to maintain.
Book a consultation to explore a tailored approach that works with your hair — not against it.
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FAQ – Science of Grey Hair
Why does hair turn grey in the first place?
Hair turns grey due to a gradual reduction in melanin production within the hair follicle, influenced by genetics and natural ageing.
Can grey hair go back to its natural colour?
In most cases, no. Once pigment production stops, the hair will continue to grow without colour.
Why does grey hair feel coarser?
Grey hair often feels coarser due to structural changes and reduced natural oil distribution.
Is grey hair harder to colour?
Yes, grey hair can be more resistant to colour, which is why professional techniques are often needed.