Scalp care, and what to test before you buy anything
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The whole industry sells to the lengths. Shampoo for shine, masks for damage, oils for ends. Almost none of it addresses the only part of your hair that is actually alive.
The hair on your head is dead protein. It cannot repair itself, it cannot be fed, and nothing you apply to it changes what it is. The scalp is different. The scalp is living tissue with a blood supply, and everything that grows out of your head is built there.
So if you want better hair in six months rather than a better afternoon, this is where the work is.
Scalp problems start in the kitchen
I want to be careful here, because this is where advice goes wrong.
"Eat a healthy diet" is useless as guidance. Healthy means different things to different people at different points in their lives — a twenty-year-old, a pregnant woman, someone recovering from illness, and a man in his sixties are not eating the same thing, and none of them should be. Being specific matters more than being emphatic.
What is not vague: hair is built from protein, and it needs the vitamins, minerals and omegas to build it. Hair is also the first thing your body stops spending on when it is short of anything, because it is not load-bearing. That is why deficiency shows up in hair before it shows up almost anywhere else, and why a shedding problem is sometimes a nutrition problem wearing a costume.
For what it is worth, this is what I eat: eggs, salmon, chicken, a little beef, some rice, vegetables. I make bone broth soup with chicken. That is not a prescription — it is one man's plate, and I am a hairdresser rather than a nutritionist.
If you want to check, here is what to ask for
Telling someone to "see a doctor" and stopping there is not advice, so let me be specific.
Four tests come up again and again with hair loss and poor scalp condition. Ask for them by name:
- Ferritin — stored iron. Low ferritin is one of the most common causes of shedding, particularly in women, and it can be well below optimal while a standard iron panel still reads as normal.
- Vitamin D — widely low, and involved in the hair growth cycle.
- Thyroid panel — TSH, and free T4 if your doctor will run it. Both underactive and overactive thyroid affect hair.
- CBC — a basic blood count, which catches a lot on its way past.
That is a short, cheap, unexotic list. A GP will not blink at it, and it turns a vague worry into a number.
And if you are not going to get tested
Most people won't, and will take something anyway. So here is the honest version rather than a lecture.
Look for a broad multivitamin that covers the basics — the B vitamins, D, zinc, iron if you need it — rather than a megadose of one thing. Hair is built from many inputs and a mountain of one of them does not compensate for a shortage of another.
What I take: Country Life Maxi-Hair Plus. That is what is in my cupboard. It is not a recommendation, because I am a hairdresser rather than a doctor, and I have no idea what your blood looks like.
Why some people should be cautious with biotin
This applies to mine and to most hair supplements, because nearly all of them are built around a very large dose of biotin.
At 5,000 mcg you are taking something like 165 times the adequate intake. That is not dangerous in itself — biotin is water-soluble and the excess leaves — but it does something that catches people out: it interferes with blood tests.
The one that matters most is troponin, the test used to diagnose a heart attack. High-dose biotin can push that result falsely low, which means a heart attack in progress can be missed. The FDA has issued a safety communication about exactly this. It also skews thyroid results, and people have been diagnosed and treated for thyroid conditions they did not have because of it.
So, plainly:
- Tell any doctor you take biotin, and say it again in an emergency room. Do not assume it is on your chart.
- Stop several days before planned blood work. Ask your doctor how long; it depends on the dose.
- Be especially careful if you have a heart or thyroid condition, or are being monitored for one. Talk to your doctor before starting rather than after.
- If you are pregnant, nursing, on medication, or managing a health condition, that conversation comes first regardless.
None of that is a reason not to take it. It is a reason not to take it quietly.
Keep your tools clean
The least glamorous item here and the one with the fastest payoff.
Every comb and brush you own carries product residue, oil and shed skin. You clean your scalp and then reintroduce all of it, and then wonder why the flaking never quite settles.
Wash brushes and combs on a schedule — weekly if you use them daily. Comb the hair out of the base first, wash the bristles with shampoo and water, reshape anything splayed with hot water and a comb, and dry them before they go away. It takes minutes.
Pillowcases too. Whatever is on a pillowcase spends eight hours pressed against your scalp.
Massage, and how it was actually done
The scalp has a blood supply, and blood is what delivers everything a follicle needs. Massage moves it.
The signature René Furterer treatment was one I performed hundreds of times, with their essential oils. It starts at the nape, at the base of the skull, and works upward and over the head from there. Fingertips, not nails. Slow enough to move the scalp rather than slide across it — that is the difference between a massage and a rub.
The direction matters more than people expect. Working upward from the nape follows the circulation you are trying to encourage rather than working against it.
Five minutes, with or without oil, and it is one of the few things on this list that is both free and immediately pleasant. Once a week is plenty. If you use a pre-shampoo oil or concentrate, fold the massage into that step and you have done two things at once.
Laser devices
These are worth knowing about and worth describing accurately.
Low-level laser devices — caps, combs, helmets — have FDA clearance, which is not the same as FDA approval. Clearance means the device was shown to be substantially equivalent to something already on the market and is considered safe for its intended use. It is a real regulatory status and it is a lower bar than approval.
What they appear to do is improve the condition of the scalp and the strength of the root over months of consistent use. What they do not do is work quickly, work for everyone, or regrow hair from a follicle that is gone.
They are also expensive. If you are considering one, the honest sequence is: see a doctor first to find out what is actually happening, then decide. Thinning has many causes — hormonal, nutritional, medication-related, autoimmune — and a device is the right answer to some of them and an expensive distraction from the rest.
The oily scalp trap
This is the most common self-inflicted scalp problem I saw, and it runs in a loop.
Scalp feels oily, so you wash it more often, or with something harsher. The stripping triggers more oil production to compensate. It feels oily sooner. You wash more often still.
Breaking it is uncomfortable and it works. Stretch the interval between washes — every other day rather than daily, then further — and use a gentler shampoo rather than a stronger one. It gets worse for about two weeks while the scalp recalibrates, and then it frequently settles at a point people did not think was available to them.
The same trap runs with dry shampoo, which does not clean anything. It absorbs oil and leaves the absorbent behind. Used occasionally it buys you a day; used daily it builds a layer on the scalp that then needs clarifying off.
Exfoliation, briefly
The scalp sheds skin like the rest of you. When that shed skin sits under product residue it compacts, and compacted buildup around the follicle is a genuine problem rather than a marketing one.
A scalp scrub or a clarifying wash once a month clears it. More often than that and you are irritating living tissue for no reason, which produces flaking that looks exactly like the flaking you were trying to fix.
Physical scrubs and chemical exfoliants both work. Pick one, not both, and not on a scalp that is already sore or broken.
When it is not a hair problem
Some things belong with a doctor rather than a stylist, and I sent plenty of clients to one.
Sudden or patchy loss. Persistent itching, soreness or scaling that does not settle with a change of shampoo. Flaking with redness and inflammation rather than dryness. Any loss that arrives alongside fatigue, weight change or a new medication.
A shampoo will not fix any of those, and the months spent trying are months the actual cause goes untreated.
The routine, if you want one
Wash the scalp, not the lengths. Massage five minutes a week, nape upward. Clean your brushes weekly and your pillowcase often. Eat like someone who intends to keep their hair. See a doctor about anything sudden, sore, or measurable.
None of that is expensive, and all of it works slowly. That is the honest version. Anything promising otherwise is selling to the lengths.
Where to buy
-
Phytosquam Intensive treatment
Phase one, two weeks.
See on Amazon -
Phytosquam Purifying maintenance
Phase two, oily scalp.
See on Amazon -
Phytosquam Moisturizing maintenance
Phase two, dry scalp.
See on Amazon -
Scalp Solutions Anti-Itch shampoo
For itching rather than flaking.
See on Amazon -
Country Life Maxi-Hair Plus, 120 capsules
The biotin supplement named on this page. 120 capsules is 30 servings.
See on Amazon
Two phases: the intensive treatment first, then the maintenance shampoo matched to an oily or a dry scalp.