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Hair guideWhy do hair treatments take 6–12 months to judge?

Why do hair treatments take 6–12 months to judge?

✓ Medically reviewed✍️ HairBase editorial team📅 Last updated: June 14, 2026⏱ 1 min read
💡 Quick answer

A humid Tuesday photo is not a 12-month exam. Photograph the same angle monthly.

Finasteride 1 mg and topical minoxidil are judged over many months in labels and clinics. Telogen clocks add confusion. This page will not invent a PMID. Related: how-long minoxidil/finasteride QA files — different URLs.

Do not start a second 5AR from a week-6 selfie. Do not triple minoxidil at week 3.

Sudden patches or systemic illness skip the patience lecture. This is not medical advice.

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📚 Sources

Sources: AAD ↗

FAQ

If I see nothing at month 2, quit?

Ask the prescriber. Many labelled timelines are longer.

Same as tapering page?

Related patience family, different URL.

Does transplant use the same clock?

Growth after FUE is also many months. Other file.

More foam to speed the clock?

No. Follow the carton.

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Not medical advice. General education only; it does not replace diagnosis or treatment by a licensed professional. Figures such as 1 mg or 5% are labelled strengths you may see in your country — not a dosing instruction. Consult a board-certified dermatologist before starting, stopping or changing any treatment.

⚠️ When to see a doctor — don’t self-treat

  • Sudden patchy or circular bald spots
  • Redness, scaling, pus, pain or itch (possible scarring alopecia — treat urgently)
  • Broken hairs or rapid loss
  • Loss with body-wide signs (weight loss, fatigue, cycle changes, acne, extra hair)
  • Loss right after a new medication
  • Any hair loss in a child
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Try the free self-check →