Evidence-first hair loss science

Every hair loss "cure," read the way a scientist would.

Rosemary oil, minoxidil, finasteride, saw palmetto, red light, PP405 — we read the trials so you don't have to, then put the papers on screen. No hype. No affiliate garbage. No BS.

85+Videos, every claim sourced
1Rule: show the study or shut up
0Miracle cures sold
The BOL promiseWHY WE EXIST
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We show the paper

Every number comes with an on-screen citation — journal, year, sample size. No study, no claim.

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Ranked, not hyped

Treatments are sorted by the strength of the evidence, not by what pays the fattest commission.

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Mechanism > marketing

DHT, follicle sensitivity, the shed, stem-cell reactivation — how it actually works, in plain English.

The whole board

Every treatment, ranked by the evidence.

Graded on the strength of the human trials behind it — not on how loud the marketing is. The bar shows how solid the proof actually is.

Strong proof
Real but modest
Weak signal
Too early to grade
GradeTreatmentWhat the evidence saysProof strength
A
Finasteride
Oral DHT blocker · Rx
Large, repeated RCTs. Stops loss in most men and regrows for many. Attacks the actual cause.
Gold-standard trials
A
Minoxidil 5%
Topical / oral
Decades of data. Reliably holds and often thickens — but only while you keep using it.
Deep, consistent
A−
Dutasteride
Stronger DHT blocker · off-label
Blocks more DHT than finasteride and beats it head-to-head — but less long-term safety data.
Strong, less mileage
B
Rosemary oil
Natural / topical
One fair trial matched 2% minoxidil at 6 months, with less itching. Slow, modest, real — not magic.
One decent trial
B−
Red light (LLLT)
Caps & combs
Several small RCTs show a real but modest thickening. Works best alongside the A-tier, not instead of it.
Small studies
C
Saw palmetto
Supplement
A weak DHT blocker — roughly half the effect of finasteride, on small, short, often-funded studies.
Thin evidence
D
Biotin & "hair" gummies
Supplements
No benefit for pattern hair loss unless you're genuinely deficient — which almost nobody is.
Basically none
?
PP405 (coming)
Pelage · topical
Phase 2a: regrew hair from dormant follicles where placebo did nothing. Promising, but early — final trials pending.
Early, watch it

Grades reflect strength of evidence, not a personal recommendation — always talk to a clinician before you start.

Start here

Four playlists. Everything you actually need.

Whether you just noticed thinning or you've tried it all, there's a lane for you.

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Short answers in 30 seconds, full evidence deep-dives when you want them.