mumscience

Articles

Everything we’ve written, in the order to read it.

Start with the pattern you recognise. Each article stands alone, but together they make one argument: the problem is at the follicle, it has a mechanism, and the mechanism can be addressed.

Why your hair never fully came back after the baby

Everyone told you it grows back. For most of it, they were right. Here is what happened to the part that didn’t — and why waiting longer will not fix it.

Postnatal  ·  Dr Rachel Osei  ·  7 min read

Temples, parting, ponytail: what your hairline is telling you

Where the thinning shows up first is not random. Each pattern points to a slightly different thing happening at the follicle — and to what will and won’t help.

Reading the signs  ·  Dr Rachel Osei  ·  8 min read

Iron, thyroid, vitamin D: the three blood tests worth asking your GP for

“Your bloods are normal” is not the same as “your bloods are good for hair”. What the standard panel measures, what it misses, and how to ask for what you need.

The GP appointment  ·  Dr Rachel Osei  ·  6 min read

Is the mum bun making it worse?

The same hairstyle every morning for years, pulled tight with one hand while you find a shoe with the other. What traction actually does to the hairline — and what it doesn’t.

Habits  ·  Dr Rachel Osei  ·  5 min read

Perimenopause can start at 38 — and hair is usually the first thing to notice

You were told it was a fifty-something problem. For a lot of women the hormonal decline begins a decade earlier, and the follicle notices long before the hot flushes do.

Hormones  ·  Dr Rachel Osei  ·  7 min read

Why the shampoos, the gummies and the roller did nothing

You did not fail to try. You tried the wrong category of thing. An honest breakdown of what each one can and cannot reach.

Evidence  ·  Dr Rachel Osei  ·  8 min read

Dry, straw-like hair after children is a follicle problem, not a conditioner problem

If nothing softens it any more, the fibre itself has changed. Where texture change comes from, and why it belongs with thinning rather than with haircare.

Texture  ·  Dr Rachel Osei  ·  6 min read

What to actually expect in twelve weeks

Hair biology is slow and nobody selling you something will say so. A realistic timeline for what changes first, what changes last, and how to photograph it so you can see it.

Expectations  ·  Dr Rachel Osei  ·  6 min read

Weaning, and the second shed nobody mentions

You got through the postnatal shed. Then you stopped feeding, and it started again. Why the hormones move twice, and how to tell a normal second shed from something that needs attention.

Postnatal  ·  Dr Rachel Osei  ·  6 min read

Breakage or shedding? The thirty-second test

They look the same in the plughole and have almost nothing in common. One is a styling problem; the other is a follicle problem. Here is how to tell which you have before you spend anything.

Reading the signs  ·  Dr Rachel Osei  ·  5 min read

Running on empty: what sleep loss and cortisol do to the follicle

“Reduce your stress” is the least useful advice a mum can be given. Here is what stress actually does to a follicle, why it hits hair months later, and what genuinely helps when the stress is not going anywhere.

Hormones  ·  Dr Rachel Osei  ·  6 min read

What a trichologist actually checks — and how to do it at home

Four checks that take five minutes once a month. They tell you whether it is getting worse, whether something is working, and what to show a GP.

The GP appointment  ·  Dr Rachel Osei  ·  6 min read

The fine hairs at your hairline: regrowth or breakage?

That halo of short hairs standing up at the front can be the best news you have had all year or a sign of damage. They look identical from a distance. Up close they are not.

Reading the signs  ·  Dr Rachel Osei  ·  5 min read

The honest product guide: what is worth your money at each stage

Five rules for judging any hair product, an explanation of why we recommend what we do, and a plain statement of what nothing can do.

Evidence  ·  Dr Rachel Osei  ·  7 min read

Colouring thinning hair: what to ask for, what to avoid, and why the roots matter most

Colour can be the best cover a thinning parting has, or the thing that turns fine hair into breakage. The difference is almost entirely in what you ask for at the basin.

Habits  ·  Dr Rachel Osei  ·  7 min read

Hard water, chlorine and the Saturday swimming lesson

Most of England and a good part of Wales runs on hard water. If your hair went dull, rough and stiff after you moved house, or after the kids started swimming, the plumbing may be the reason.

Texture  ·  Dr Rachel Osei  ·  6 min read

The haircut that makes thin hair look thicker (and the three that make it look worse)

A good cut will not grow a single new hair, but it can make the hair you have look like twice as much. What to ask for, what to refuse, and how to describe the problem to a hairdresser.

Habits  ·  Dr Rachel Osei  ·  6 min read

The pill, the coil, the implant: what contraception does to your hair

Hormonal contraception changes the hormonal weather at the follicle. Some methods help thinning hair, some make it worse, and swapping between them causes a shed that is almost never explained.

Hormones  ·  Dr Rachel Osei  ·  7 min read

The thyroid problem that shows up after a baby — and gets missed

Around one in twenty women develop a thyroid problem in the year after giving birth. It causes exhaustion, low mood and hair loss, and it is routinely put down to being a new mum.

The GP appointment  ·  Dr Rachel Osei  ·  6 min read

PCOS, hair and the years after children

Polycystic ovary syndrome affects around one in ten women, and its signature on the head is the temple-and-crown pattern, often worsening after pregnancy. What is going on, and what actually helps.

Hormones  ·  Dr Rachel Osei  ·  7 min read

Hair loss after rapid weight loss, and the injection question

Lose more than a stone quickly — by diet, surgery or a GLP-1 injection — and a shed follows two to three months later. Why, how long it lasts, and what to do so it does not become permanent.

Reading the signs  ·  Dr Rachel Osei  ·  6 min read

The itchy, flaky scalp: a plain guide to what it is and what to do

Dandruff, dry scalp, seborrhoeic dermatitis, psoriasis and product build-up all itch and all flake. They need different things. How to tell which is which, and why it matters for regrowth.

The GP appointment  ·  Dr Rachel Osei  ·  8 min read

Eating for hair when you are living on the kids’ leftovers

A mum’s diet is, very often, crusts, cold pasta and whatever is left on a plastic plate. The follicle notices. What it actually needs, and how to get it without cooking a separate meal.

Habits  ·  Dr Rachel Osei  ·  7 min read

The dry shampoo habit: how much is too much, and what it is doing to your scalp

Dry shampoo has kept a generation of mums presentable on four hours’ sleep. Used the way most of us use it, it is also quietly clogging the scalp, and it is a common hidden cause of itch, flakes and slow regrowth.

Habits  ·  Dr Rachel Osei  ·  5 min read

Second pregnancy, second shed: why the hair copes worse the second time

The first postnatal shed was frightening but it grew back. The second one, two or three years later, is often smaller and never quite recovers. That is not bad luck. It is arithmetic.

Postnatal  ·  Dr Rachel Osei  ·  6 min read

Raising ferritin properly: the supplement mistakes that keep mums low for years

You were told your iron was low, you took the tablets, they upset your stomach, you stopped. Two years on, the hair is still thin. Here is how to do it so it actually works.

The GP appointment  ·  Dr Rachel Osei  ·  7 min read

The styles that protect a thinning hairline (and still survive a toddler)

You cannot wear your hair down with a two-year-old. You can stop the way it goes up from making the corners worse. Six styles that hold, and the two rules that matter more than the style.

Habits  ·  Dr Rachel Osei  ·  5 min read

HRT and hair: what it does, what it doesn’t, and the progestogen question

More women in their forties are starting HRT, often for hair among other things. It can help, it can do nothing, and one common formulation can make thinning worse. Here is how to think about it.

Hormones  ·  Dr Rachel Osei  ·  7 min read

Hair while breastfeeding: what is safe to use, and what to expect when you stop

Feeding delays the postnatal shed, changes its shape, and rules out some treatments. What is happening, which products are fine, and how to prepare for the weaning drop.

Postnatal  ·  Dr Rachel Osei  ·  6 min read

Grey hair after children: why it arrives with the thinning, and what to do about the texture

The first greys often show up in the same years, and the same places, as the thinning — and grey hair is wirier, drier and harder to manage. What is going on, and how to look after both at once.

Texture  ·  Dr Rachel Osei  ·  6 min read

Antidepressants, anxiety medication and hair: the side effect nobody mentioned

One in ten mums is on an SSRI. Hair thinning is a listed side effect of most of them, it starts months after the first tablet, and it is usually mistaken for something else. What is known, and what to do without stopping.

Hormones  ·  Dr Rachel Osei  ·  6 min read

How to talk to your hairdresser about thinning without dying of embarrassment

Your hairdresser can see your scalp better than you can, has seen hundreds of others, and is usually too polite to mention it. The five questions to ask, and how to use what they tell you.

Habits  ·  Dr Rachel Osei  ·  5 min read

The photo from four years ago: how to tell whether it is really thinner

You are not sure. Some days it looks fine; some days it looks terrible. Before you spend anything, here is how to get a real answer using photos you already have.

Reading the signs  ·  Dr Rachel Osei  ·  5 min read

The wash-day routine for thinning hair: what to change, in what order

Most of what is sold for thinning hair is haircare, and haircare does not regrow hair. But a bad routine breaks the hair you have. Here is the one that does no harm, from the tap to the pillow.

Habits  ·  Dr Rachel Osei  ·  6 min read

Vitamin D and hair: why the UK winter is a hair problem

From October to March the sun in Britain is too low to make vitamin D in your skin, and the follicle uses it to start a new cycle. What the deficiency looks like, how to test, and how much to take.

The GP appointment  ·  Dr Rachel Osei  ·  5 min read

The ponytail test: the one measurement that tells you the truth

Mirrors lie, lighting lies, and everyone you ask is being kind. A soft tape measure and a monthly number will tell you, within a few months, whether it is getting worse, stable, or coming back.

Reading the signs  ·  Dr Rachel Osei  ·  4 min read

Receding corners: is it the ponytail or the hormones?

A thinning temple from years of tight styles and a thinning temple from androgen sensitivity look the same in the mirror. They need opposite things. Here is how to tell them apart in two minutes.

Reading the signs  ·  Dr Rachel Osei  ·  5 min read

Hair on four hours’ sleep: what broken nights do, and what helps when sleep isn’t coming back

“Sleep more” is not advice a mum can take. What sleep deprivation actually does to the follicle, why the damage arrives months later, and the five things that reduce it when the nights are what they are.

Hormones  ·  Dr Rachel Osei  ·  6 min read

Thinning at the crown: the patch you cannot see and everyone else can

You only found it in a changing-room mirror or a photo from behind. Why the crown thins later than the temples and parting, what it tells you, and why it is the pattern most often left too long.

Reading the signs  ·  Dr Rachel Osei  ·  5 min read

Toppers, extensions and fibres: the honest guide to covering thinning while you treat it

There is no shame in cover. There is a lot of bad advice about it. Which options help thinning hair, which make it worse, and how to use them without losing the hair underneath.

Habits  ·  Dr Rachel Osei  ·  7 min read

Coffee, wine and the follicle: what the three o’clock latte and the nine o’clock glass actually do

Caffeine is in half the hair products on the shelf and alcohol is in half the mums at the school gate. What each one does to hair, and where the line is.

Habits  ·  Dr Rachel Osei  ·  5 min read

The photo protocol: how to photograph your hair so you can actually see what is changing

Every trichologist uses standardised photographs, because looking is unreliable. Here is the exact method — angles, light, timing — so that in three months you will know, rather than feel.

Expectations  ·  Dr Rachel Osei  ·  5 min read

When the GP says it’s normal: what to do next

You went, you were brave enough to ask, and you were told it was your age, or the baby, or stress, and that your bloods were fine. You are not wrong to feel dismissed. Here is how to use that appointment anyway.

The GP appointment  ·  Dr Rachel Osei  ·  6 min read

C-sections, blood loss and hair: the birth itself can be the reason

A difficult birth, a caesarean, a haemorrhage or a long labour puts the body through a physical shock that shows up in the hair months later — on top of the ordinary postnatal shed. What to check, and why it matters two years on.

Postnatal  ·  Dr Rachel Osei  ·  5 min read

The coin-sized patch: alopecia areata, and why it needs a GP not a serum

A smooth, round bald patch that appeared over a few weeks is a different condition from everything else on this site. It is common after pregnancy, it is treatable, and the treatment is not on a shelf.

The GP appointment  ·  Dr Rachel Osei  ·  6 min read

The hairline that moves back evenly, and the eyebrows that go with it

Frontal fibrosing alopecia is rare, rising, and often mistaken for ordinary thinning for years. Because it scars, those years matter. The signs that should send you to a dermatologist rather than a shelf.

The GP appointment  ·  Dr Rachel Osei  ·  6 min read

The heat rules: straighteners, dryers and thinning hair

Heat does not touch the follicle, but it snaps the fine hair a struggling follicle produces, and on a thinning head every broken hair shows. The temperatures, the tools and the habits that make the difference.

Habits  ·  Dr Rachel Osei  ·  5 min read

The school-run photograph: why you look thinner in photos than in the mirror

The mirror shows you from the front, in soft light, at eye level, and you have arranged your hair for it. The photo is taken from above, in daylight, by someone who has not. Which one is right?

Reading the signs  ·  Dr Rachel Osei  ·  4 min read

Minoxidil for women: the honest guide before you start

It is the one hair-loss treatment with decades of evidence, and most women who try it stop within a year. Both things are true. What it does, the shed on starting, the rebound on stopping, and who it suits.

Evidence  ·  Dr Rachel Osei  ·  8 min read

Hair supplements: what the evidence says about each one

Biotin, collagen, saw palmetto, the “hair, skin and nails” gummies, and the ones with a doctor on the box. Which have evidence, which are harmless, and which are quietly making things worse.

Evidence  ·  Dr Rachel Osei  ·  8 min read

Does scalp massage actually work? What the one real study found

It is free, it feels good and it is all over social media. There is one proper study. It found something, and it found that it took longer than anyone advertises.

Evidence  ·  Dr Rachel Osei  ·  4 min read

Hair loss three months after the flu, Covid or a bad winter bug

Everyone in the house had it in January. In April the hair started coming out. A high fever or a proper illness triggers a shed on a fixed delay — here is the timeline, and how to tell it from something that will not stop.

Reading the signs  ·  Dr Rachel Osei  ·  5 min read

Talking to your partner and your kids about your hair

Most mums carry this on their own. The partner has not noticed, or has noticed and said nothing, and the children say what they see. A few ways to have the conversation that make the next year easier.

Habits  ·  Dr Rachel Osei  ·  5 min read

When it is the immune system: autoimmune hair loss in the years after a baby

Pregnancy switches the immune system down; the birth switches it back up, and sometimes it comes back angry. Thyroid, alopecia areata, lupus and the others — how they show up in hair, and the symptoms that mean you should be tested.

The GP appointment  ·  Dr Rachel Osei  ·  6 min read

Dr Rachel Osei

Dr Rachel Osei

BSc (Hons), MSc Trichology  ·  Consultant trichologist  ·  14 years in clinic, specialising in postnatal and hormonal hair loss

Every article on mumscience is written by Rachel, from the pattern she sees in clinic week after week: mums in their late thirties and forties whose hair changed after children and who were told, by everyone, to give it time. She writes to explain what is actually happening at the follicle, in plain English, and to say clearly what will and will not help. About Rachel and how we work →