How to strengthen hair: the habits that count

There is no single trick. What the available evidence supports is less exciting: reduce what breaks and pulls out your hair. The American Academy of Dermatology describes damaged hair as fragile and prone to breaking, and notes that ongoing breakage can leave hair looking frizzy and, over time, contribute to thinner-looking hair. The good news is that simple changes prevent further damage. That is where you start, and if the changes do not help, a dermatologist with specialist certification may be worth seeing, because the cause may not lie in how you care for your hair.

If you are looking for a supplement, read the section on that below with low expectations. If your problem is shedding rather than breakage, no cosmetic habit will fix it — and we explain why.

The habits that really count, in order of impact

Before the detail, the essentials. Wash gently, condition every time, dry without rubbing, comb with a wide-toothed comb, keep heat low and infrequent, and avoid pulling hair tight. That is six things. None of them requires buying anything special.

Damaged hair becomes fragile and tends to break. What you can do is follow simple care that prevents further damage.

Washing: massage the scalp, let the shampoo run through

The AAD's recommendation is concrete: gently massage shampoo into the scalp and, when rinsing, let it run through the length of your hair instead of scrubbing it there. Always follow with conditioner.

This sounds like very little. It is not. According to the American Academy of Dermatology, damaged hair becomes fragile and tends to break, which is why the way you wash long hair matters.

Drying: wrap in a towel, do not rub

Wrap wet hair in a towel and let it dry in the air rather than rubbing it. When a hairdryer is unavoidable, the AAD advises the lowest possible heat setting. The same goes for heat styling tools: limit the time they touch your hair and use them about once a week or less.

Damaged hair is fragile and tends to break. That is why the American Academy of Dermatology advises wrapping wet hair in a towel and letting it dry in the air instead of rubbing it, and combing wet hair with a wide-toothed comb without pulling.

Combing: wide teeth, no rush

Comb wet or damp hair with a wide-toothed comb, letting straight hair dry a little first. The AAD is blunt about an old myth: hair never needs a hundred brush strokes a day. Pulling and stretching during styling should be avoided.

If your hair is wet or damp, detangle it carefully with a wide-toothed comb, avoiding pulling or twisting it.

Traction: hair tied tightly will break

Tying hair loosely is better than tight ponytails, firm clips or braids pulled tight against the scalp. Extensions and hairpieces should be light and worn for no more than two to three months, because constant traction damages hair.

Chemicals: space out the appointments

Space out colouring, perms and straightening — the AAD suggests every eight to ten weeks, or longer in winter — and have only one chemical service at a time. Having only one chemical service at a time helps avoid added damage, since damaged hair is fragile and tends to break.

How to fit this into a real day

You do not need a ten-step routine. You need anchors that do not depend on discipline.

• Shampoo and conditioner together, always. Conditioner should be used after every wash.
• Towel wrap while you get dressed. Hair dries on its own in that time.
• Wide-toothed comb in the shower or just after, before hair dries completely.
• Heat tools kept for one occasion a week, not every day.
• Hair loose at home and for sleeping. Tie it only when you really have to.

On the days that go badly — you got home late, hair sat wet in a tight ponytail, you used the hairdryer on full — there is no making up for it. The next day you go back to the basics. Consistency over weeks counts for more than perfection on one day.

Common mistakes, and what matters less than you think

The ones that really do damage: rubbing wet hair with a towel, combing by force, tying hair tight every day, stacking chemical treatments, using heat at full blast and often. All of them appear in the AAD's recommendations, and all are avoidable without spending money.

The ones that matter less than people assume: the hundred brush strokes, which the AAD classes as a myth, and the idea that a miracle shampoo exists. No product reverses hair that has already broken; what the evidence supports is that the AAD recommends simple care to prevent further damage.

What if nothing changes after two or three weeks?

If you have already adjusted the essentials for a reasonable period and you are still seeing breakage or, above all, less hair, the AAD has a clear recommendation: see a dermatologist, because hair care may not be the cause of the problem.

That matters especially if you are worried about thinning or shedding. Most causes can be halted or treated, and the earlier the problem is addressed, the better the results tend to be.

It is worth separating the two situations. Losing up to about a hundred hairs a day is normal, according to MedlinePlus. Shedding beyond that can have several origins — certain illnesses, certain medicines, chemotherapy, stress, a diet low in protein, family history, poor nutrition — and treatment depends on the cause. No cosmetic habit fixes an internal cause.

The supplement: where it fits, if it fits at all

Honesty here means being dry about it. Biotin deficiency is rare and can cause thin hair, scaly rashes and brittle nails. But the evidence that supplementing biotin helps hair is inconclusive, and published studies suggesting a benefit for growth in normal, healthy hair are lacking. This applies even to people who eat normally and have no diagnosed deficiency.

If you suspect a deficiency, that is a clinical question, not a question of choosing a bottle. Speak to a healthcare professional before supplementing.

Zinc and vitamin C appear in hair formulas, but we have no evidence at this point that would support claiming they strengthen hair in people who are not deficient. We are not going to invent it.

That said, if you are looking for a supplement containing these nutrients, TuttiBear has Hair & Nails Gummies, in gummy form, for adults: two a day, chewed, preferably after a meal. They do not replace the habits above or a varied and balanced diet. Read the label and do not exceed the recommended daily dose. In case of pregnancy, breastfeeding, illness or use of medication, consult a healthcare professional before use. Contains polyols; excessive consumption may produce laxative effects. One practical detail: biotin may interfere with the results of some laboratory tests — before having tests, tell your doctor and the laboratory that you take this supplement.

When the honest advice is to speak to a doctor or pharmacist

If the problem is shedding rather than breakage, that is where you start. The same applies if you have a diagnosed illness, take regular medication, are pregnant or breastfeeding, or your hair is changing shape unexpectedly. A pharmacist can advise on interactions and on what is worth watching; a doctor can investigate the cause.

The limit of this page is this: the habits described prevent further damage and are backed by solid guidance from health bodies. They do not promise thicker, longer or stronger hair in weeks. No habit in this article does. What they do is reduce the risk of further damage and of hair breakage, as the American Academy of Dermatology puts it.