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By Vanessa Lyn Gonzales | 7 min read
I wish someone had told me these things at 42. I was not losing hair yet — or if I was, I had not noticed.
The changes I would spend the next several years dealing with had not yet arrived. But they were coming, and there are things I know now that would have made them considerably easier to navigate.
If you are in your early to mid-40s, or if you have started noticing subtle changes but are not yet sure what is driving them, this is for you. Not alarmist.
Not defeatist. Just practical.
Here is what the research actually shows.
1. The changes often start years before you realise what they are
Most women connect hair changes to menopause after the fact — looking back and realising that what started as subtle texture changes in their early 40s was the beginning of the perimenopause transition. Hair changes during this phase are rarely dramatic at first.
A slightly wider parting. Hair that feels different after washing.
A texture that is harder to work with than it used to be. These early changes are easy to attribute to stress, a different shampoo, or simply "hair having a bad few months." Recognising them as potentially hormonal early — and beginning a targeted approach sooner — is meaningfully better than waiting.
2. Oestrogen and DHT are in a relationship. When oestrogen falls, DHT rises.
This is the most important thing to understand about menopausal hair change, and it is rarely explained clearly. Oestrogen normally suppresses the influence of DHT — dihydrotestosterone, a potent androgen produced from testosterone — on hair follicles.
When oestrogen declines, DHT has less resistance. It binds to follicle receptors and causes miniaturisation over time.
This is why menopausal hair loss is often described as "androgenetic" even in women with entirely normal androgen levels — the issue is not that androgens have increased, but that oestrogen's suppressive influence on them has decreased.
3. The most useful interventions target the mechanism, not the symptom
Hair loss during the menopausal transition cannot be meaningfully addressed by products designed to make existing hair look thicker. Volume sprays, thickening mousses, and dry shampoo are cosmetic management — useful for confidence, but not doing anything at the follicle level.
The interventions with clinical evidence behind them for hormonal hair loss are those that address the DHT mechanism: saw palmetto (which inhibits 5-alpha-reductase, the enzyme that produces DHT), topical caffeine (which may help counter DHT's effects at the follicle and support scalp microcirculation), and red clover extract (which contains compounds that may modulate DHT activity). These ingredients have published clinical research specifically in the context of hair loss and, in some studies, hormonal hair change in women.
If you recognise what's described above, ThickTails has built a detailed guide to perimenopause and menopause hair changes — covering the hormonal science and how to build a consistent routine around it. Read the full guide here →
4. Scalp health becomes more important, not less, during this transition
Declining oestrogen affects the scalp environment directly — sebum production changes, the scalp can become drier and more sensitive, and circulation to follicles may diminish. Women who have had healthy, uncomplicated scalps their whole lives sometimes find themselves dealing with flakiness, sensitivity, or a scalp that feels different than it used to.
This is not a separate problem from the hair change — it is the same hormonal mechanism expressing itself at the scalp level. Addressing scalp health specifically, rather than simply treating the hair shaft, becomes increasingly important from perimenopause onwards.
5. Blood tests are helpful — but ask the right questions
A standard blood panel will check for obvious deficiencies and conditions. If your thyroid is underactive, your iron is very low, or your B12 is severely deficient, these will show.
But hormonal hair loss can occur alongside entirely "normal" blood results. It is worth asking your GP specifically about your ferritin level — the stored form of iron — and what threshold is considered optimal for hair follicle health, rather than simply the general lower limit of normal.
Iron deficiency, even at levels that fall within the "normal" clinical range, is strongly associated with hair shedding in women. A level of 70 micrograms/litre or above is often cited in trichological literature as the threshold for optimal hair growth.
“The sooner you begin a consistent, targeted routine, the sooner you will have meaningful data on whether it is working. Waiting until the loss is 'bad enough' costs you time.”
6. Ninety days is the minimum. Start now, not later.
The hair growth cycle operates on a timescale that does not accommodate impatience. Changes to the follicular environment take a minimum of three months to manifest as visible change in the hair.
Most published research sees the most significant outcomes at six months. This means that the sooner you begin a consistent, targeted routine, the sooner you will have meaningful data on whether it is working.
Waiting until the loss is "bad enough" to act costs you time that would have been better spent building the routine earlier.
7. The emotional weight of this is real. You are not vain for caring.
Hair is tied to identity in ways that are worth naming explicitly, because the cultural default is to minimise them. "It's just hair" is something that is said almost exclusively by people who still have theirs.
For many women, hair changes during menopause carry a weight that goes beyond vanity — they are a visible manifestation of a transition that is already disorienting in other ways. The distress this causes is not disproportionate.
It is normal. And it is one more reason to take the practical steps available early, rather than waiting and hoping it resolves on its own.
If you are in the early stages of perimenopause, this is the right time to start.
ThickTails has developed a comprehensive guide to perimenopause and menopause hair changes — covering what is happening, what the evidence supports, and how to build a 90-day hormone-aware routine. Use code HORMONEAWARE15 for 15% off your first order.
Build Your Hormone-Aware Routine →
Clinical references
1. Dhurat R, et al. "An Open-Label Randomized Multicenter Study Assessing the Noninferiority of a Caffeine-Based Topical Liquid 0.2% versus Minoxidil 5% Solution in Male Androgenetic Alopecia." Skin Pharmacology and Physiology, 2018. View on PubMed →
2. Evron E, et al. "Natural Hair Supplement: Friend or Foe? Saw Palmetto, a Systematic Review in Alopecia." Skin Appendage Disorders, 2020. View on PubMed →
3. Lueangarun S, Panchaprateep R. "An Herbal Extract Combination (Biochanin A, Acetyl Tetrapeptide-3, and Ginseng Extracts) versus 3% Minoxidil Solution for the Treatment of Androgenetic Alopecia." Journal of Clinical and Aesthetic Dermatology, 2020. View on PubMed Central →
Vanessa Lyn Gonzales writes about women's health, hormonal transitions, and midlife wellbeing. This article is for informational purposes and does not constitute medical advice. Please consult your GP or a qualified trichologist regarding any health concerns.
