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Starting/stopping treatments · Updated 2026-10-30 · Editorial review in progress
Hair shedding after starting minoxidil
Also searched as: dread shedminoxidil sheddingRogaineRegaine
A temporary increase in shedding is commonly reported in the first weeks of minoxidil — the so-called 'dread shed' — and in one 2025 study of topical minoxidil it peaked around week 4 and was below baseline by week 16.
Plot my dates on the Shed ClockThe timeline
| Stage | When (typically) | What's happening |
|---|---|---|
| Start | Week 0 | Minoxidil shortens the resting (telogen) phase, releasing resting hairs early. [Indian] |
| Onset | Within 1–8 weeks | Reported within a week of starting (review) and during the first 2–8 weeks in some studies. [Journal] |
| Peak | Around week 4 (topical) | In a retrospective study of 49 patients, shedding was significantly increased at week 4. [Journal] |
| Settling | Commonly 8–16 weeks | A review says it usually settles in 8–10 weeks; in the 2025 study shedding was below baseline by week 16 (longer with 2% than 5%). [Journal] |
Key facts
- For low-dose oral minoxidil, dread shed is described as typically beginning 2–4 weeks after starting and lasting 3–6 weeks; one clinic cohort found it in 5.2% of patients. [JAAD]
- Not everyone experiences shedding. [Journal]
Normal vs. warning signs
- A modest increase in shedding during the first two months
- Shedding that tapers by around weeks 8–16
- Patches or bald spots
- Scalp irritation, redness or itching
- Dizziness, palpitations, chest pain or swelling — contact your prescriber promptly
- Shedding still increasing after 4 months
What may help
- Speak to your prescriber or pharmacist before changing how you use it.
- Take dated photos in the same light to track change.
- Use the product as directed on the label or by your clinician.
Looking for scalp-care products? Our sister brand Advanced Trichology makes them. Disclosure: sister brand
Related triggers
Frequently asked questions
What is the minoxidil dread shed?
A commonly described temporary increase in shedding early in treatment, thought to result from minoxidil shortening the resting phase.
How long does it last?
A review says it usually settles in 8–10 weeks; one 2025 study found shedding below baseline by week 16.
Does shedding mean it's working?
Some researchers suggest it could be a pointer to effectiveness, but this is not proven for everyone.
Should I stop?
Do not change treatment without speaking to your prescriber or pharmacist.
Sources
- Indian Journal of Plastic Surgery (PMC8719956). Pharmacological Management of Pattern Hair Loss
- Journal of Drugs in Dermatology. Hair Loss Myths
- Journal of Dermatological Treatment, 2025. Whether the transient hair shedding phase exists after minoxidil treatment… (retrospective study, n=49)
- JAAD International, 2024. Combating “dread shed”: overlapping topical and oral minoxidil during oral minoxidil initiation