Tool
Shedding Timeline Projector
When does shedding after childbirth, COVID or illness start, peak and stop?
Shedding that follows a trigger — an illness, an operation, a birth — runs on a delay, which is why it so rarely looks connected to anything. Pick what happened and roughly when, and this puts the windows published in our guides onto your own calendar. It is a calendar conversion, not a forecast about you.
Drawing the timeline needs JavaScript. Without it, every window this tool would plot is in the table further down the page.
These are published typical ranges, not a prediction about you. They describe what studies reported for groups of people, and real timelines sit early, late or outside them. Shedding also has more than one cause at a time — only an examination can establish what is behind yours.
| After… | First (window 1) | Then (window 2) | Then (window 3) | Then (window 4) |
|---|---|---|---|---|
| Illness, surgery, crash dieting, a medication change, major stress, stopping hormonal contraception | Shedding usually noticeablemonths 2–3C02 | Shedding gradually stopsmonths 3–6C02 | Regrowth becomes visiblemonths 6–12C02 | Full cosmetic recoverymonths 12–18C02 |
| COVID-19 infection | Shedding usually startsmonths 2–3C08 | Heaviest shedding reportedmonths 3–6C08 | Recovery beginsmonths 6–9C08 | Complete recovery for mostmonths 6–12C08 |
| Childbirth | Shedding usually startsmonths 2–4W03 | Peak sheddingmonths 4–6W03 | Shedding resolvesmonths 6–12W03 | Cosmetic regrowth completemonths 12–18W03 |
Every number on this page, and the sentence it came from (31)
- 2-3 months Shedding usually becomes noticeable 2-3 months after the trigger
Hair loss appears 2-3 months after the triggering event as follicles prematurely shift from growth (anagen) to resting (telogen) phase.
C02- 3-6 months Shedding gradually stops somewhere between months 3 and 6
3-6 months: Shedding gradually stops
C02- 6-12 months Regrowth becomes visible between months 6 and 12
6-12 months: Regrowth becomes visible
C02- 12-18 months Full cosmetic recovery at 12-18 months
12-18 months: Full cosmetic recovery
C02- 6 months Shedding that persists past 6 months without improvement is listed as a reason to be seen
Shedding persists beyond 6 months without improvement
C02- 95 % Share of acute cases described as fully resolving once the trigger is gone
95% of acute TE cases fully resolve within 2-3 months of removing the trigger
C02- 33 % Share of cases in which no specific trigger is ever identified
In approximately 33% of cases, no specific trigger is identified.
C02- a common trigger Illness and fever
Febrile illness is one of the most common TE triggers.
C02- scales with the surgery Surgery and physical trauma
Major surgery, severe injuries, and significant blood loss can trigger TE.
C02- metabolic stress Crash dieting and rapid weight loss
Rapid weight loss—regardless of specific nutrients—signals metabolic stress.
C02- varies by drug Medication changes
Many medications can trigger TE, though the association varies in strength
C02- well documented Severe psychological stress
Severe emotional stress—bereavement, divorce, job loss, financial crisis—can trigger TE.
C02- same mechanism as postpartum Stopping estrogen-containing contraception
Similar mechanism to postpartum—stopping estrogen-containing birth control can trigger synchronized telogen shift.
C02- 2-3 months Shedding usually starts 2-3 months after infection
Hair loss typically begins 2-3 months after COVID-19 infection
C08- 30-57 days An earlier onset window, 30-57 days, is reported in our telogen effluvium guide
Post-COVID telogen effluvium affects 24-85% of patients, with shedding typically appearing 30-57 days after infection—earlier than classic TE.
C02- 56 days Average onset in one study
In one study, the average onset was 56 days—just under two months.
C08- 3-6 months Heaviest shedding is reported 3-6 months after infection
The most dramatic shedding usually occurs 3-6 months post-infection.
C08- 6-9 months Recovery typically begins 6-9 months after infection
Recovery begins 3-6 months after shedding starts, typically 6-9 months post-infection.
C08- 6-12 months Full recovery typically takes 6-12 months
Most people experience active shedding for 3-6 months, with full recovery taking 6-12 months.
C08- 18 months Thickness may take up to 18 months to return fully
Hair thickness may take up to 18 months to completely return to pre-COVID levels.
C08- 2-4 months Shedding starts 2-4 months postpartum
Average 2.9 months postpartum (range: 2-4 months)
W03- 2.9 months Average onset, 2.9 months postpartum
Average 2.9 months postpartum (range: 2-4 months)
W03- 4-6 months Peak shedding at 4-6 months postpartum
Average 5.1 months postpartum (range: 4-6 months)
W03- 5.1 months Average peak, 5.1 months postpartum
Average 5.1 months postpartum (range: 4-6 months)
W03- 6-12 months Shedding resolves 6-12 months postpartum
Average 8.1 months postpartum (range: 6-12 months)
W03- 8.1 months Average resolution, 8.1 months postpartum
Average 8.1 months postpartum (range: 6-12 months)
W03- 12-18 months Cosmetically significant regrowth may take 12-18 months
Most women regain full hair density by their baby's first birthday, though cosmetically significant regrowth may take 12-18 months.
W03- 200-400 hairs/day Daily shedding reported during the peak
May lose 200-400 hairs daily (versus normal 50-100)
W03