You have loosened your styles, changed your products and your scalp is clean, yet your parting keeps widening. When the habits are right and the hair still thins, the cause is often inside, not outside.
How hormones move hair
Each follicle cycles through growth, rest and shedding. Oestrogen keeps hair in the growth phase; androgens (male hormones, present in all women) shorten it and shrink the follicle in sensitive areas. Thyroid hormones set the pace of the whole cycle. When any of these shift, thousands of follicles change phase at once and the shedding shows two to three months later.
The usual suspects
- Polycystic ovary syndrome (PCOS): thinning at the crown and the parting, often with irregular periods, acne or hair growing on the face or body. Very common and very under-diagnosed in Black women.
- Thyroid disorders: diffuse thinning all over, with fatigue, weight changes, feeling cold or hot, brittle nails and dry skin.
- Iron deficiency: not a hormone, but it acts the same way. Heavy periods make it frequent. Diffuse shedding plus tiredness and pale gums.
- Post-partum and stopping the pill: a sudden drop in oestrogen triggers a wave of shedding two to four months later. Usually temporary.
- Perimenopause and menopause: oestrogen falls, androgens gain ground, the hair at the crown and temples gets finer, and the texture often changes.
What it looks like on the scalp
Hormonal loss is usually diffuse or centred on the crown and the parting, with a normal-looking scalp. It is not itchy, not flaky, and it does not come with bumps. If you see redness, scaling, pain or patches, look at scalp conditions and traction first.
When to see a doctor
If the shedding has lasted more than three months, if your parting is visibly wider than a year ago, or if you tick any of the symptoms above, ask your doctor for a blood test: ferritin, full blood count, thyroid (TSH), and if PCOS is suspected, androgens. These are simple tests, and they change the plan completely.
Where we come in
We are not doctors and we do not treat hormonal conditions. What we do: recognise the pattern, tell you when to get tested, and build a scalp and hair routine that protects what you have while the medical side is sorted. Hormonal loss plus tight braids is the worst combination we see; the routine is where we can act right away.
