The Slow Disappearance of Your Hair's Potential
You have had the same haircut for years, but somewhere in your mid-thirties it stopped feeling quite right. Your hair does not grow as fast as it used to. The density feels slightly reduced. The strands seem finer, more fragile. Your ponytail is a little thinner than it was a decade ago. You attributed it to stress, to life changes, to just getting older. You stopped expecting your hair to grow the way it used to.
Here is what nobody tells you: yes, some change in hair growth rate with age is biologically expected. How much of it you actually notice, though, has a lot to do with how much length you are losing to breakage along the way — and that part is not fixed.
What Actually Changes in Your Hair Follicles With Age
Hair follicles have a life cycle regulated by a complex interplay of hormones, growth factors, and local scalp conditions. In your twenties, follicles are generally operating at peak efficiency: the anagen phase lasts three to seven years per strand, and the telogen phase is short. In your thirties and forties, several things begin to change. Hormonal shifts — including changes in oestrogen, progesterone, and in some women, the beginning of androgenic influence — alter the signalling environment around follicles. The anagen phase shortens, meaning each strand does not grow as long before shedding. The Journal of Investigative Dermatology has documented that by the mid-thirties, the average anagen phase duration has measurably decreased in women — which directly translates to slower apparent growth and reduced length retention.
Simultaneously, scalp circulation — the delivery of oxygen, nutrients, and hormonal signals to follicles via the blood supply — decreases with age. Less blood flow means fewer resources reaching the follicle. The follicle does not die; it becomes undernourished, which reduces its output. This is a gradual change in supply rather than a switch being flipped.
The Scalp Conditions That Compound Age-Related Slowdown
The natural biological changes that occur with age are compounded by accumulated scalp stress. Years of washing with sulphate-heavy shampoos, product buildup, heat styling, and environmental exposure leave the scalp's skin layer progressively more compromised. A compromised scalp has reduced microcirculation, increased inflammation, and impaired follicle access to nutrients — all of which accelerate the miniaturisation and cycle-shortening that age alone would produce more slowly. This is why many women experience a disproportionate decline in hair quality in their thirties compared to what the biological timeline would predict. The genetics are one variable; how gently you treat the hair and scalp is another. Only one of the two is up to you.
What Is Worth Doing
The underlying hormonal and follicular changes are not something a product reverses, and anyone telling you otherwise is selling something. What is worth doing is the part that is not genetic: not stripping the scalp with harsh detergents, not adding heat damage on top of a hair cycle that is already shortening, and not losing to breakage the length that your follicles are still producing. As growth slows, retention matters more than it used to — the same centimetre lost off the ends takes longer to replace at forty than it did at twenty.
If the change feels sudden rather than gradual, that is worth raising with a GP. Thyroid conditions, iron deficiency and perimenopausal shifts all show up in hair, and all of them are things a blood test can answer and a shampoo cannot.
What we make
Tasic Pure Oils makes Long and Strong — a shampoo, conditioner and mist built around organic aloe vera pulp and coconut milk. Australian-made in small batches, with no sulphates, silicones, parabens or palm oil.
It will not change what your follicles are doing. What it does is clean gently, condition the lengths, and leave the scalp comfortable — which is the part that keeps length on your head. Have a look at it here.
References
• Journal of Investigative Dermatology, Vol. 133 (2013): Age-related follicular miniaturisation and hair cycle changes
• International Journal of Trichology, Vol. 11 (2019): Scalp microcirculation and hair growth rate in ageing women
• British Journal of Dermatology: hair changes across the female lifespan
