Author: Chinnagounder Thiruvenkatam Published Date: May 18, 2026 Last-Verified Date: May 18, 2026
You are finding hair everywhere. In the comb after the morning routine. On the pillow. Clogging the shower drain. You switched shampoos. You went back to the old shampoo. You started oiling twice a week even though you had stopped the habit two years ago because it never seemed to make any difference. Nothing has changed. The hair is still falling.
Here is the most important thing to understand before trying anything else: the hair falling right now, in May and June, was not triggered in May and June. And the things you are doing – the oil, the mild shampoo, the protein conditioner – are not addressing the actual causes. There are three of them. They require three different responses. Treating any one of them will not fix the others.
Cause 1 – Telogen Effluvium: Why Summer Triggers Hair Fall That Arrives in Monsoon
Hair grows in three phases. Anagen is the active growth phase, lasting two to six years. Catagen is a brief transition. Telogen is the resting phase, lasting approximately three months, after which the hair sheds and the follicle restarts a new anagen cycle. At any given time, approximately 85 to 90 percent of scalp hairs are in anagen and 10 to 15 percent are in telogen. This is the normal baseline.
Telogen effluvium (TE) occurs when a triggering stress event causes a larger proportion of anagen hairs to prematurely shift into the telogen phase. The hairs that shifted to telogen then shed approximately 2 to 3 months after the trigger event – not immediately. This delay is the single most important fact about TE that no mainstream Indian article explains. The trigger and the shedding are separated by an entire season.
The physiological stress of Indian summer – rising core body temperature, dehydration from sweating, nutritional changes from reduced summer appetite, and in many cases iron depletion from inadequate hydration and heat-related gut absorption changes – acts as a TE trigger for a significant proportion of Indian women. Research published in the British Journal of Dermatology examining seasonal hair shedding patterns found that women shed more hair in summer and autumn compared to winter and spring. In the Indian context, where summers are significantly more severe than in the temperate climates where most of this research was conducted, the trigger intensity is correspondingly higher.
The shedding from a March-April trigger arrives in June, July, and August. This is the reason many Indian women believe the monsoon causes hair fall. It does not. The monsoon coincides with the hair fall; the summer triggered it. Understanding this changes what you do about it: there is no treatment for hair that is already in telogen phase and on its way out. The treatment is preventing the next TE cycle by managing the triggers – which means managing summer heat stress, hydration, and iron levels before the next summer peak, not during the current shedding phase.
TE is self-limiting. Once the trigger resolves, the follicles return to normal cycling. Hair fall from a single summer TE episode typically peaks 3 to 4 months after the trigger and resolves within 6 months. What you see now will reduce on its own by October or November if no new significant trigger occurs. The treatment is patience, continued good nutrition, and management of the causes described in Cause 2 and Cause 3 below – which are not self-limiting and will continue regardless of TE resolution.
Cause 2 – Hard Water Shaft Damage: Why It Looks Like Hair Fall But Is Not
In cities including Delhi, Noida, Gurugram, Hyderabad, Pune, Jaipur, and parts of Bengaluru and Chennai that rely on borewell or tanker water, the water that reaches your shower contains high concentrations of dissolved calcium and magnesium. Water with Total Dissolved Solids (TDS) above 300 ppm is classified as hard by WHO standards. Delhi’s borewell water regularly exceeds 500 to 800 ppm TDS. Hyderabad’s municipal water varies between 350 and 700 ppm depending on the area and source.
Hard water causes hair breakage through two mechanisms. First: calcium and magnesium ions deposit on the hair shaft surface after the water dries, forming a mineral film that makes hair stiffer, more brittle, and more prone to snapping when combed or tied. Research published in the International Journal of Trichology confirmed that hair treated with hard water showed significantly decreased tensile strength compared to hair treated with soft water. Second: hard water raises the scalp’s pH, disrupting the slightly acidic environment (around pH 5.5) that keeps the scalp microbiome balanced. This creates conditions for malassezia (the fungus responsible for dandruff) to proliferate, which causes itching, scratching, and secondary inflammation that weakens follicles.
The critical distinction: hard water damage is shaft breakage, not follicle shedding. The hair breaks at a point along its length and the shorter broken strand falls. This looks identical to full-length hair fall from TE. Most women experiencing both simultaneously cannot distinguish between them – they count all the fallen hair together and believe the problem is uniformly worse than it is. Examining the fallen strands tells you which is which: a TE shed hair has a small white bulb at the root end (the telogen club). A broken hair from hard water damage has no bulb – it is a mid-shaft break with frayed or clean ends.
Oiling does not fix hard water damage. Oil applied to the hair shaft does not remove the mineral deposits that have already formed, and it does not change the mineral composition of the incoming water. The fix for hard water hair damage is addressing the water itself.
A shower filter designed for Indian water conditions reduces the calcium and magnesium that reaches the scalp. Care Dale, an Indian brand with an independent clinical study conducted at a Bengaluru dermatology lab (50 participants, TDS above 500 ppm, 4 weeks), reported 78 percent reduction in hair fall and an increase in scalp hydration. The Care Dale filter is priced at approximately ₹1,499 for municipal water supply or ₹1,899 for borewell and tanker supply, available at caredale.in and on Amazon India (price verified May 18, 2026). The WaterScience CLEO Multi Flow is an established alternative at approximately ₹2,695. Installation on a standard Indian shower arm requires no tools and takes under five minutes.
For those who cannot immediately invest in a shower filter: an acidic final rinse after washing reduces mineral deposit formation. Mix one tablespoon of apple cider vinegar in one litre of water and pour it over the hair as a final rinse after shampooing, then rinse briefly with plain water. The mild acidity helps clear some mineral deposits and restores a more acidic pH to the scalp and shaft. This is not as effective as a filter for source water treatment, but it costs almost nothing and produces a noticeable improvement in hair texture within two to three weeks of consistent use.
Cause 3 – Ferritin: The Iron Measurement Most Indian Doctors Never Check
When an Indian woman visits a doctor and reports significant hair fall, the investigation typically includes a complete blood count. The haemoglobin result comes back at 11.5 or 11.8 g/dL – the doctor notes it as slightly low or borderline normal and says the blood tests are broadly fine. The woman continues losing hair. The investigation missed the relevant number entirely.
Serum ferritin is the measure of the body’s iron storage – how much iron is held in reserve, as opposed to how much is actively circulating in blood (which is what haemoglobin measures). Hair follicles are high-priority consumers of available iron. When iron stores drop below a functional threshold, the body redirects available iron to essential processes and the hair follicle’s iron supply drops. Follicle function is impaired. Hair does not grow normally. Existing hairs shift to telogen phase.
Multiple peer-reviewed studies have established that serum ferritin below 30 nanograms per millilitre is associated with hair fall, even in women whose haemoglobin is above the 12 g/dL threshold for clinical anaemia. A widely cited study by Rushton and others published in Clinical and Experimental Dermatology found that raising ferritin above 40 ng/mL through iron supplementation produced measurable improvement in hair loss. The Indian population has particularly high rates of low ferritin due to vegetarian diets, heavy menstrual flow, and a general dietary pattern low in heme iron.
Serum ferritin is a separate test from a standard complete blood count. It requires a specific request and costs ₹300 to ₹600 at most diagnostic labs. In the context of significant hair fall, it is the single most important blood test to ask for specifically – more than haemoglobin, more than thyroid function, more than biotin levels. If your doctor has not measured ferritin, ask for it by name at the next consultation.
If ferritin is below 30 ng/mL, iron supplementation is the appropriate response – but as noted in our guide on why low iron in Indian women causes persistent tiredness and the ferritin test most doctors skip, the form of iron supplement matters. Ferrous sulphate causes gastrointestinal side effects that stop many people from completing the course. Ferrous bisglycinate (available in India as Feronia-XT and similar formulations) is significantly better tolerated and equally effective. Ferritin restoration takes three to six months of consistent supplementation. Hair improvement follows ferritin recovery, not the other way around.
What Does Not Work – Said Plainly
Biotin supplements are among the most aggressively marketed products for hair fall in India. For people who are genuinely biotin-deficient – which is uncommon in the Indian population because biotin is present in a wide variety of foods – biotin supplementation can help. For people who are not biotin-deficient, supplementation produces no measurable benefit for hair fall. No large-scale randomised controlled trial has demonstrated biotin supplementation improves hair fall in non-deficient individuals. Before spending ₹500 to ₹1,500 per month on biotin tablets, ask your doctor to check serum biotin levels – if they are within the normal range, the supplement will not help.
Hair fall control shampoos address the hair shaft surface. Telogen effluvium is a follicle-level process – the follicle is in resting phase and the hair will shed regardless of what reaches the shaft surface. A shampoo cannot instruct a follicle to stay in anagen. The benefit of a gentle, low-sulfate shampoo during a TE episode is that it reduces additional mechanical damage to hair that is already structurally stressed – it does not reduce the TE shedding itself. Spending significantly more on a “hair fall control” shampoo over a basic gentle formulation is not justified for TE management.
Expensive hair serums applied to the scalp may contain ingredients that support scalp health – certain peptides, caffeine, and minoxidil in the case of regulated hair growth products – but most commercially available Indian market serums contain concentrations too low to produce follicle-level effects. Minoxidil is a genuinely effective topical treatment for androgenetic alopecia (pattern hair loss – a different condition from TE). It does not treat TE. If hair fall has been significant and sustained for more than six months, a dermatologist can determine whether the diagnosis is TE, androgenetic alopecia, or another cause – each requires a different treatment approach.
Two Women – What They Found and What Changed
Meera Iyer, 32, Hyderabad. She was losing hair from all three causes simultaneously: summer TE from the April heat onset, hard water breakage from high-TDS borewell supply, and low ferritin (tested at 16 ng/mL on a specific ferritin test she asked for at her next appointment after reading about the connection). She installed a Care Dale shower filter, started ferrous bisglycinate on her doctor’s recommendation, and stopped the hair fall serum. The hard water breakage reduced noticeably within six weeks – her hair felt different in texture after washing, less brittle, fewer mid-shaft breaks in the fallen strands. The TE shedding continued for another two months, then declined as the summer trigger moved further into the past. By month four, total daily hair shed was back within the normal range of 50 to 100 strands. Her ferritin had risen to 28 ng/mL at the four-month check – still below the 30 ng/mL target, and she continued supplementation.
Kavitha Sundaram, 29, Delhi. Her hair fall had been worsening for two summers. She had spent approximately ₹8,000 across various serums, shampoos, and supplements over 18 months with no lasting improvement. A dermatologist consultation identified androgenetic alopecia (a receding hairline and diffuse thinning at the crown) in addition to TE – two conditions, not one. The treatment for androgenetic alopecia required a different product than what she had been using. She was prescribed topical minoxidil 2 percent for the androgenetic component and treated her ferritin deficiency (measured at 11 ng/mL) with iron supplementation. The TE was managed through the same seasonal approach described in this article. The key point from her experience: if hair fall has been substantial and continuing for more than two summers without improvement, a dermatologist visit to confirm the diagnosis before purchasing any further products is the more efficient path.
Frequently Asked Questions
How many hairs falling per day is actually normal?
The American Academy of Dermatology states that losing 50 to 100 hairs per day is within the normal range for adults. Individual baseline varies – people with more total hair may shed more, people with less may shed fewer, and both can be normal. What matters is change from your personal baseline: if you previously shed 50 strands and are now shedding 150 to 200, that is a meaningful increase worth investigating regardless of whether the absolute number crosses any threshold. Counting exactly is difficult – a general sense of significantly more hair in the drain, on the pillow, and in the comb than three to four months ago is the relevant signal.
My mother and grandmother also had thin hair. Is this hereditary and can it be treated?
Androgenetic alopecia – hereditary pattern hair loss – is indeed familial and does run in both male and female lines. In women it typically presents as diffuse thinning at the crown and top of the scalp rather than the receding hairline seen in men. It is a chronic, progressive condition (unlike TE, which is temporary) and responds to specific treatments including topical minoxidil, which is available over the counter in India in 2 percent formulation (for women) and 5 percent (for men), at approximately ₹300 to ₹600 per bottle from major pharmacy chains. A dermatologist can distinguish between TE and androgenetic alopecia from examination and, when necessary, a trichoscopy. Both conditions can occur simultaneously, which is why single-cause explanations are often insufficient for sustained hair fall.
Does thyroid function affect hair fall and should I test for it?
Yes. Both hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid) are associated with hair fall. Hypothyroidism is significantly more common in Indian women than generally recognised, and it can cause diffuse hair thinning as one of its symptoms alongside fatigue, weight changes, and temperature sensitivity. The test is a simple blood TSH (Thyroid Stimulating Hormone) level, available at any diagnostic lab for approximately ₹200 to ₹500. In a woman with significant unexplained hair fall, the investigation should include haemoglobin, serum ferritin, and TSH as a minimum panel. If all three are normal and hair fall continues, a dermatologist consultation is the appropriate next step.
Is it safe to oil the hair during a TE episode or does it pull out more hair?
Oiling does not cause hair to fall during TE – the hairs that shed during TE are already in telogen phase and will shed regardless of oiling. However, aggressive scalp massage during oiling can mechanically dislodge telogen hairs that would have shed naturally over the next few days – causing them to shed all at once during the massage, which creates the impression of oiling causing hair fall. The hair would have shed anyway. If oiling causes distress because of the volume of hair shed during the process, reducing scalp massage intensity or skipping scalp oiling during the peak shedding phase is reasonable. It does not help the TE, but it reduces the anxiety of seeing large amounts shed at once.
Can stress from work or personal life cause hair fall separate from summer heat?
Yes. Psychological stress is an established TE trigger. Research from multiple dermatology journals confirms that significant psychological stress events – job loss, illness, bereavement, relationship breakdown – can trigger TE with the same 2 to 3 month delay as physical stress triggers. For many Indian women, summer brings both physical heat stress and work-related deadline stress simultaneously. The TE triggered by the combined load can be more significant than either cause alone. Managing psychological stress through regular sleep, exercise, and social connection is not a vague wellness recommendation – it is a documented approach to reducing TE trigger intensity. That said, stress-induced TE also resolves when the stressor resolves, and aggressive intervention is usually not necessary.
I have hard water and my husband does not have significant hair fall. Does hard water affect women more than men?
Hard water affects hair mechanically and affects all hair equally regardless of sex. The reason women may notice hard water effects more is that women typically have longer hair (more surface area for mineral deposits and more mechanical stress from combing and styling), are more likely to use chemical treatments that make the shaft more porous and vulnerable to mineral damage, and often wash hair more frequently with more vigorous scalp massage. Additionally, women are more likely to notice and report hair fall due to longer strands being more visible. Men with short hair shed the same number of hairs but the short length makes it less visually apparent. If your husband is on the same water supply and had a blood test that showed adequate ferritin and no thyroid issues, the difference is most likely observation bias and hair length rather than any fundamental difference in how hard water affects male versus female hair.
Information last verified:
May 18, 2026. Primary sources: British Journal of Dermatology on seasonal hair shedding patterns; International Journal of Trichology – Luqman M et al., study on hard water and hair tensile strength (2016); Rushton DH et al., “Causes of hair loss and the developments in hair rejuvenation,” International Journal of Cosmetic Science, 2002, on serum ferritin thresholds for hair loss; American Academy of Dermatology on normal hair shedding range at aad.org; Care Dale clinical study data published at caredale.in, verified May 2026; Indian Dermatology Online Journal guidance on telogen effluvium at idoj.in; Care Dale shower filter Indian market prices at caredale.in and Amazon India, verified May 18, 2026; diagnostic lab ferritin test pricing based on typical rates at Thyrocare and Dr Lal PathLabs India, verified May 2026; Feronia-XT ferrous bisglycinate product at major Indian pharmacy chains, pricing range ₹150-₹250, verified May 2026.
Why low iron in Indian women causes persistent tiredness and the ferritin test most doctors skip” – https://dailyhindnews.in/anaemia-symptoms-indian-women-iron-deficiency/
How to choose the right moisturiser for Indian skin in summer when the scalp is also affected by heat” – https://dailyhindnews.in/best-moisturiser-indian-skin-summer/
What to do when summer heat causes more than just hair fall and skin changes” – https://dailyhindnews.in/heat-stroke-vs-heat-exhaustion-india-first-aid/
How to remove tan from face and arms when outdoor summer exposure is unavoidable despite the hair damage risk” – https://dailyhindnews.in/how-to-remove-tan-face-arms-indian-skin/
How to manage monthly household spending when unexpected medical and grooming costs keep appearing” – https://dailyhindnews.in/save-5000-per-month-on-30000-salary-india/
Disclaimer:
This article is for educational and informational purposes. Hair fall has multiple causes including medical conditions that require professional diagnosis. For hair fall that is significant, sudden, or accompanied by other symptoms such as fatigue, skin changes, or scalp pain, consult a dermatologist or general physician. Self-diagnosis and self-treatment without ruling out medical causes can delay appropriate care.
Chinnagounder Thiruvenkatam is the Founder and Publisher of dailyhindnews.in/ and Tips Clear Media LLP, Chennai. A 25-year veteran of the Central Reserve Police Force (CRPF) and full-time digital publisher since 2016. Full author profile