Evidence status: current·Last updated 12 Jun 2026 · v2.3·Revision history
What does the research suggest for you?
An evidence-based read on your situation
8 questions. No account, no diagnosis. At the end you'll get a plain-language summary of what the strongest evidence points to for a situation like yours, with the grade behind each option.
We show our grading method. This is education, not medical advice.
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Your evidence summary
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What the evidence supports, graded
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We'll email this result and the deeper reviews behind each grade, including the FGF signaling piece. No product pitches, unsubscribe anytime.
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A short, personalized evidence sequence, built from your answers.
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Grades for hair treatments change. Know when they do. Get an alert when a grade moves, plus each new review. About 2 emails a month. No products, no sponsors.
Added 2 recent RCTs to the evidence base; grade reaffirmed after re-scoring.
03 Mar 2026
v2.2
Incorporated a pooled safety analysis; expanded the adverse-effects section.
18 Nov 2025
v2.1
Reworked the delivery & vehicle discussion; added comparison figure.
22 Jul 2025
v2.0
Full re-review against updated methodology; all sources re-verified.
04 Feb 2022
v1.0
First published.
Grade Alerts
Grades for hair treatments change. Know when they do. Get an alert when a grade moves, plus each new review. About 2 emails a month. No products, no sponsors.