What to Do About Hair Loss: An Honest Guide With a 4-Step Plan

More hair in your brush, a widening part, bald spots at the crown: anyone who notices this mainly wants to know one thing: what to actually do now. This guide walks you honestly through the decision. It shows you how to recognize your type of hair loss, where to get help, and which treatment is genuinely proven for which cause.

One important point up front: the most common form, hereditary hair loss, already affects 58 percent of men between 30 and 50, according to a population-based study of 1,005 men (Yeo et al., PMC2938575). It responds differently than diffuse, nutrition-related hair loss. This exact distinction determines the right kind of help.

When does hair loss need treatment?

Hair loss does not call for treatment at a fixed number, but when your normal baseline shifts: when you consistently lose noticeably more hair than usual, or your hair visibly thins over the course of weeks. As a rough guide, a daily loss of about 50 to 100 hairs is considered normal (a clinical rule of thumb from dermatology, e.g. NHS inform Scotland).

This rule of thumb is not a medical threshold. How many hairs you lose each day depends heavily on hair density, hair length, and how often you wash it; on wash days you naturally lose more. The change over time is therefore more telling than counting, and you can best document it with photos of your part taken in the same light over a few weeks.

A simple self-test is the pull test: grasp about 50 to 60 hairs between your thumb, index, and middle finger and gently pull from the root to the tip. The classic rule of thumb considers a result abnormal if more than 10 percent come out (with 60 hairs, roughly 5 to 6). A more recent reference (McDonald et al. 2017) sets the threshold more strictly at around 2 hairs. The test only shows active hair loss, not a diagnosis.

First step: which type of hair loss do I have?

The most important step with hair loss is to determine the type, because treatment, prognosis, and the question of a possible hair transplant all depend on it. There are three main forms: hereditary (androgenetic), diffuse (telogen effluvium), and patchy (alopecia areata). This classification follows the American Academy of Dermatology (AAD).

Hereditary hair loss shows a typical pattern: in men, a receding hairline at the temples and a bald spot at the crown (Norwood scale); in women, a diffuse widening of the part without a receding hairline (Ludwig scale). It is the most common cause worldwide and does not grow back on its own without treatment, because the affected follicles progressively shrink.

Diffuse hair loss thins the whole scalp evenly, without a sharp pattern. It is usually a reaction to a trigger such as iron deficiency, a thyroid disorder, stress, or an illness, and in most cases it is reversible once the cause is resolved. Patchy hair loss shows sharply defined bald spots and is an autoimmune reaction.

If you suspect a hereditary pattern, classifying it by the established scales helps: the Norwood scale for men, the Ludwig scale for women. They describe how far pattern hair loss has progressed and give a first sense of which options make sense. The table below helps you place yourself roughly.

This branch point is decisive: only hereditary pattern hair loss responds to hair-growth medication or a hair transplant. Diffuse hair loss needs treatment of the underlying cause. Often both are present at the same time. For more depth, see the related articles on the causes of hair loss and on androgenetic alopecia.

Which doctor helps with hair loss?

The first point of contact for help with hair loss is a dermatologist. They determine the type using trichoscopy, a non-invasive examination of the scalp with a dermatoscope, order the appropriate blood work, and, if needed, perform a scalp biopsy. In the medical literature (PMC8719967), trichoscopy is regarded as a fast, painless standard tool for distinguishing the forms of alopecia.

Additional specialist help can be useful: an endocrinologist if a hormonal or thyroid cause is suspected, and a gynecologist for women with cycle- or hormone-related questions. In most countries, “trichologist” is not a protected medical title and does not replace medical diagnosis. For the actual workup, the dermatologist remains the responsible specialist.

You should come to the appointment well prepared. That saves time and makes the diagnosis more accurate. Bring your photo timeline, a list of all your medications, and details about your family (does hereditary hair loss run in it?). The checklist below sums up what to bring and which values to raise.

Which blood values should I have checked?

With diffuse hair loss, targeted blood work is worthwhile, because many triggers are fixable. The most important are ferritin (iron stores), TSH (thyroid), vitamin D, zinc, and vitamin B12, plus a hormone panel for women. These values are part of the standard dermatological workup. You can read the details in the article on the blood test for hair loss.

For ferritin, a value below 30 ng/ml counts as manifest iron deficiency, which often goes hand in hand with hair loss. Some trichologists cite target values above 70 ng/ml for optimal hair growth. Important: this is a practical rule of thumb debated within trichology, not a general lab standard (the usual reference range is mostly 15 to 150 ng/ml). More on this in the article on iron deficiency and hair loss.

The TSH value reveals an overactive or underactive thyroid, both of which can trigger diffuse hair loss (see hair loss and the thyroid). For vitamin D, zinc, and B12, intake is guided by the DGE reference values (vitamin D 20 µg/day, B12 4.0 µg/day, zinc 7 to 16 mg/day depending on phytate intake). The article on vitamins for hair loss offers additional background.

A note on safety: these values are diagnostic targets, not a prompt to supplement on your own. Without a proven deficiency, overdosing can do harm; too much zinc, for example, triggers a copper deficiency, and too much vitamin D causes hypercalcemia. Get tested first, then correct any deficiency in a targeted way and under medical supervision.

What really helps against hair loss? An overview of the treatment options

What really helps against hair loss depends on the cause: fixable diffuse hair loss usually disappears once the trigger is corrected; hereditary hair loss needs ongoing treatment (minoxidil, and for men finasteride) or a hair transplant; patchy hair loss is treated dermatologically. The recommendations for the hereditary type are backed by the European EDF S3 guideline (Kanti et al. 2018, JEADV).

Minoxidil (topical, for both women and men) is well documented. A Cochrane review of female hair loss found twice as many women with at least moderate regrowth as under placebo (relative risk 1.86; 95 percent confidence interval 1.42 to 2.43). The effect only lasts, however, as long as you keep using it. Once you stop, the hair loss returns. Details in the article on minoxidil for hair loss.

Finasteride (oral, prescription-only, for men only) lowers DHT levels and is effective, but not without risks (see the safety note below). For women of childbearing age it is contraindicated because of the risk to an unborn child. PRP (platelet-rich plasma therapy) as well as low-level laser therapy and mesotherapy can play a supporting role, but their evidence is limited and inconsistent (high study heterogeneity, risk of bias).

To put the last column in context: the practical difference often comes down to effort. Minoxidil and finasteride slow hereditary hair loss but require daily, ongoing use and recurring costs. A hair transplant is a one-time procedure with a permanent result in the treated area. You should never take these medications on your own; use them only as prescribed by a doctor.

Safety note on finasteride

On the common question of cost: in many countries with public health systems, a dermatologist’s diagnostic workup (history, trichoscopy, and blood work where medically indicated) is generally covered. A hair transplant for hereditary hair loss, by contrast, is considered a cosmetic procedure and is generally not covered. It is a self-pay treatment.

What can I do about hair loss myself?

There is quite a bit you can do yourself, but you should be realistic about how much it helps: a balanced diet rich in protein and iron, less chronic stress, gentle hair care without tight braids (which promote traction alopecia, StatPearls NBK470434), and quitting smoking all support hair health. With hereditary or disease-related hair loss, however, they do not replace treatment.

An honest word on home remedies and shampoos: caffeine shampoos and most cosmetic “miracle products” have no solid evidence for significant hair growth in hereditary hair loss. Excessive vitamin regimens also do not help healthy people without a deficiency, and can even do harm. What nutrients can and cannot do is covered in the article on supplements for hair loss.

What helps quickly to cover thinning, say before an event?

If you want to visually cover a thinning spot on short notice, say before a date, a celebration, or an important meeting, there are purely cosmetic instant options. They do not treat the hair loss and do not replace a diagnosis, but they do visibly disguise the thinning. Important: they are a stopgap, not a treatment, and change nothing about the cause.

What to do about sudden, stress-related, or illness-related hair loss?

Sudden, heavy hair loss is usually acute telogen effluvium, triggered by an event about 2 to 3 months earlier: a fever, surgery, a serious illness, a crash diet, or intense stress. This form is often reversible and, according to the medical literature (PMC8719967), usually subsides within 6 months. If it lasts longer, you should have it checked by a doctor.

With stress-related hair loss, the body pushes follicles prematurely into the resting phase. Once the trigger is gone, the cycle recovers on its own over several months, and a specific medication is usually not needed. After childbirth, hormone-driven shedding affects an estimated 40 to 50 percent of women. It often begins 2 to 4 months after delivery and usually normalizes within 6 to 12 months.

Between women and men, the pattern differs: men usually show a receding hairline at the temples and a bald spot at the crown, while women show a widening part with a preserved hairline. In women, fixable causes such as iron deficiency or thyroid problems more often play a part as well, which is why blood work is especially important here. For more depth, see the articles on hair loss in women and hair loss due to hypothyroidism.

With patchy hair loss and sharply defined bald spots, you should always be in a dermatologist’s care, because it is an autoimmune disease with its own treatment (AWMF S3 guideline 013-104). For severe cases, JAK inhibitors such as baricitinib have been approved since 2022/2023. Do not treat this type yourself.

Hereditary hair loss: what to do when medication is no longer enough?

Hereditary (androgenetic) hair loss is progressive and does not grow back on its own. Medications such as minoxidil and finasteride can slow it and partly thicken the hair, but they cannot bring back already-bald areas where the follicles have completely died. Where the pattern is stable and there is a sufficient donor area, a hair transplant is the only permanent solution.

For the common question “Do I still have time for minoxidil?” there is a rough guide: as long as you can still see fine, short vellus hair on the thinning spot, there are usually shrunken but still living follicles there that might respond to medication. If the skin looks completely smooth and shiny without any fuzz, the follicles there are likely exhausted, and medication generally cannot reactivate them. This assessment is only a guide and does not replace a specialist’s look through the dermatoscope.

The honest distinction is decisive: only hereditary pattern hair loss is suitable for a hair transplant. Diffuse hair loss across the whole scalp is contraindicated for it; here the cause must be treated first. With active patchy hair loss, a transplant is even expressly contraindicated, because the immune system can attack newly transplanted follicles too. Often a hereditary and a diffuse component are present at the same time.

Because the right decision hinges on the type, diagnosis always comes first, not buying a product. For the medical workup of the cause and blood values, the dermatologist remains the responsible specialist. If you already suspect a hereditary pattern and want to know whether it could be treated surgically, Elithair’s free hair analysis is a fitting second step, a purely aesthetic-surgical check. It is a visual pattern analysis (Norwood/Ludwig) and estimates whether a stable donor area and transplantable hair loss are present. It replaces neither the dermatologist visit nor a medical blood test, but complements them.

When does hair grow back?

With fixable causes such as iron deficiency, a well-managed thyroid, or resolved stress, the hair grows back in most cases, realistically about 3 to 6 months after the cause is corrected. The reason lies in the hair cycle: the follicles first have to go through the resting phase (telogen) before they re-enter the growth phase (anagen). More on this in the article on the hair cycle.

Expert perspective

Frequently asked questions: what to do about hair loss

Sources

Note: This article is for general information and does not replace medical advice, diagnosis, or treatment. For persistent or heavy hair loss, please consult a dermatologist. Medications such as minoxidil and finasteride may only be used after a medical consultation and prescription. Last updated: 2026.