If you've been wondering why your hair is falling out in spring this year, you're in good company. Every March and April, trichologists and dermatologists report a significant uptick in patients concerned about sudden, seemingly unexplained shedding: more hair in the shower drain, on the pillowcase, wrapped around the hairbrush.

The reassuring truth is that in the vast majority of cases, what's happening isn't hair loss at all. It's seasonal shedding — a well-documented biological response to the winter-to-spring transition that affects a significant proportion of the population, particularly women. Understanding what's driving it doesn't just offer reassurance. It tells you exactly what your scalp needs right now, and why the steps you take during this six-to-eight week window genuinely matter for the hair you'll wear all summer.

In this article:

• The science behind spring shedding
• Why spring makes it worse than it has to be
• The role of the scalp microbiome
• What your scalp actually needs right now
• Supporting your scalp from the inside
• When to seek professional advice
• Frequently asked questions

The Science Behind Why Hair Falls Out in Spring

To understand why hair is falling out in spring, it helps to understand the hair growth cycle itself.

Every strand on your head moves through four distinct phases: anagen (active growth, lasting two to seven years), catagen (a brief transitional phase of two to three weeks), telogen (a resting phase of two to four months), and exogen (the active shedding phase, when the strand detaches and falls). Under normal circumstances, around 85 to 90 percent of your hair is in the anagen phase at any given moment, with only 5 to 15 percent resting in telogen.

Seasonal shifts disrupt this balance — and melatonin is the key mechanism most people haven't heard of.

"Melatonin plays a critical but underappreciated role in keeping hair follicles anchored in the growth phase," explains trichologist Anabel Kingsley of the Philip Kingsley Clinic. "As spring daylight extends and melatonin production naturally falls, more follicles simultaneously shift into the resting phase. The shedding that follows — typically six to eight weeks later — can feel alarming but reflects a deeply normal seasonal rhythm."

This phenomenon, known in clinical literature as telogen effluvium, causes daily shedding to rise temporarily from the normal range of 50 to 100 strands to well over 200. It typically peaks between April and May in the Northern Hemisphere and resolves naturally within weeks.

The important distinction trichologists consistently emphasise is between seasonal shedding and pathological hair loss. Seasonal shedding is diffuse, temporary, and cyclical. If shedding is concentrated at the temples or crown, accompanied by visible thinning, or persists beyond eight weeks, a consultation is warranted to rule out androgenic alopecia, nutritional deficiencies, or thyroid-related causes.

Why Spring Makes Hair Fall Out More Than It Has To

The hormonal shift is only part of the story. For most people asking why their hair is falling out in spring, winter product buildup is as significant a contributing factor as the hormonal shift — often more so.

Throughout the colder months, most people reach for heavier products: richer conditioners, denser hair oils, thicker leave-ins. These products, combined with reduced humidity, a more sedentary indoor lifestyle, and the natural slowdown in skin cell turnover that cooler temperatures produce, result in months of accumulated debris sitting on the scalp surface.

Dead skin cells, excess sebum, styling residue, and environmental pollutants layer into follicle openings in a way that regular shampooing simply cannot address. Shampoo cleans the hair shaft. It doesn't exfoliate the skin beneath it.

"The scalp is skin — and like skin anywhere on the body, it benefits enormously from regular exfoliation," says consultant dermatologist Dr. Justine Kluk. "When follicle openings become obstructed by seasonal buildup, the hair that should be regrowing cannot do so efficiently. The shedding itself is natural. But the recovery is significantly impaired by a scalp that isn't properly prepared."

This distinction matters practically. The seasonal shedding cannot be prevented — it's hormonal and cyclical. The quality, speed, and density of the regrowth that follows, however, is directly influenced by the condition of your scalp entering the recovery phase.

The Role of the Scalp Microbiome

One element of spring scalp disruption that remains underappreciated in mainstream hair care is the impact of seasonal transition on the scalp microbiome — the complex ecosystem of bacteria, fungi, and microorganisms that keep the scalp balanced, healthy, and resilient.

Temperature shifts, increased sweating as spring arrives, changing humidity, and months of product accumulation all have the potential to disturb this balance. When the microbiome tips out of equilibrium, the consequences become visible: increased flaking, heightened reactivity, oiliness that seems disproportionate to your usual scalp behaviour, and a potential return of dandruff symptoms that were absent through winter.

This is why the most progressive spring scalp care doesn't simply focus on cleansing. It focuses on restoring. A detox approach that only strips is addressing the symptom rather than the system — and can leave the scalp more vulnerable than before.

What Your Scalp Actually Needs Right Now

The good news: the spring scalp reset is neither complicated nor time-consuming. It requires one targeted addition to your existing routine and a degree of consistency over the weeks that follow.

Exfoliation as the foundation

The most effective scalp scrubs combine physical exfoliation — fine granules that provide mechanical lift and stimulate circulation at the root level — with chemical exfoliation via AHAs such as glycolic or lactic acid, which dissolve the bonds between dead skin cells without abrasion. Used two to three times weekly, a dual-action formula lifts months of winter accumulation and creates the clean, unobstructed environment that healthy regrowth requires.

Syra's Soul Scalp Scrub is one of the more clinically considered options currently available in the UK market. Its formula pairs glycolic and lactic AHAs with coffee seed granules for physical exfoliation, bentonite clay for deep sebum adsorption, and niacinamide for anti-inflammatory support and sebum regulation.

What genuinely distinguishes it from most competitors is the inclusion of ProRenew Complex CLR™ — a patented Lactococcus ferment probiotic complex with published clinical data on scalp microbiome restoration. This dual approach addresses both the debris and the bacterial balance beneath it. In consumer trials, 90 percent of users reported reduced flakiness and 85 percent noticed a meaningful reduction in scalp oiliness with consistent use.

A note for sensitive scalps

The benefits of scalp exfoliation are well-evidenced — but so are the considerations for reactive skin. The combination of AHAs and fragrance actives present in many scalp scrub formulas can cause sensitivity in already-compromised scalps. Dermatologists recommend starting at once weekly before building to the full recommended frequency, and pausing use if tightness, redness, or increased irritation occurs.

Those with active scalp conditions including seborrhoeic dermatitis, psoriasis, or open sores should consult a dermatologist before beginning any scrub routine. The benefits are real — but they require the right introduction.

Supporting Your Scalp from the Inside

Topical care addresses the surface. But spring shedding is also influenced by nutritional factors that shift with the seasons.

Iron, ferritin, vitamin D, zinc, and biotin are the micronutrients most closely associated with hair follicle health in clinical literature. Winter frequently depletes vitamin D specifically, given reduced sun exposure — and low ferritin levels are one of the most common and most frequently missed contributors to increased shedding in women. A straightforward blood panel with your GP will confirm whether supplementation is warranted.

Hydration also plays a meaningful role in scalp barrier function. Increasing water intake as temperatures rise supports the skin's ability to regulate sebum production and maintain the moisture balance that healthy follicle function depends upon.

When to Seek Professional Advice

While seasonal shedding is normal and temporary, there are circumstances where professional assessment is important.

Consult a trichologist or dermatologist if shedding persists beyond eight to ten weeks without reduction, if you notice visible thinning or scalp exposure at the parting or crown, if shedding is accompanied by scalp pain, burning, or significant inflammation, or if you have recently experienced significant physical or emotional stress, illness, or hormonal changes including post-pregnancy, perimenopause, or thyroid disruption.

The British Association of Dermatologists and the Trichological Society both maintain practitioner directories for those seeking qualified UK specialists.

The Bottom Line

Seasonal shedding in spring is one of the most common and least understood hair concerns dermatologists and trichologists encounter. It is biological, cyclical, and in the overwhelming majority of cases, entirely temporary.

What you can control is the environment your follicles return to. A scalp that enters the recovery window free of winter buildup, with a balanced microbiome and unobstructed follicle openings, is positioned to support faster, healthier, and more resilient regrowth. A scalp that doesn't will likely extend the shedding phase unnecessarily — and produce hair that, come summer, lacks the density and vitality it should have.

Ready to begin your spring scalp reset? Discover the Soul Scalp Scrub by Syra — a clinically formulated, dual-action probiotic scrub built specifically for this moment in the seasonal calendar.

Frequently Asked Questions

Is it normal to lose more hair in spring?

Yes. Seasonal shedding in spring is a well-documented biological response triggered by falling melatonin levels as daylight extends. Most people shed 50 to 100 hairs daily; this can temporarily rise to over 200 during the spring transition window. It typically resolves within six to eight weeks.

How long does spring hair shedding last?

Spring hair shedding typically lasts between six and eight weeks. If shedding continues beyond ten weeks or is accompanied by visible thinning at the parting or crown, it is worth consulting a trichologist or dermatologist to rule out other contributing factors.

What can I do to reduce hair falling out in spring?

The most effective steps are: introducing a weekly scalp scrub to lift winter buildup and unblock follicles; reducing heavy styling products that accumulate at the root; checking vitamin D and iron levels with your GP; and increasing hydration as temperatures rise. Consistency over four to six weeks produces the most meaningful results.

Does a scalp scrub help with spring hair shedding?

A scalp scrub does not stop seasonal shedding, which is hormonal and cyclical. However, it significantly supports the recovery phase by removing follicle-blocking buildup, rebalancing sebum production, and improving the scalp environment for healthier, faster regrowth — which is where the real long-term benefit lies.

When should I see a doctor about spring hair loss?

Seek professional advice if shedding persists beyond eight weeks, if thinning is concentrated at the crown or temples, or if shedding is accompanied by scalp pain, burning, or inflammation. These can indicate conditions beyond seasonal shedding that respond well to targeted clinical treatment.

Is a scalp scrub safe for colour-treated hair?

Most well-formulated scalp scrubs (like Soul), including those using AHAs and physical granules, are safe for colour-treated hair when used as directed. The scrub targets the scalp skin rather than the hair shaft, so colour integrity is generally not affected. If in doubt, patch-test and consult your colourist.

Always consult a qualified trichologist or dermatologist if you are concerned about hair loss that persists or appears progressive. The British Association of Dermatologists maintains a find a dermatologist directory for UK patients.