Can’t they just let some dude use the gel on their head to test it out? Should be very easy to verify it works on humans as well.

Imo that's BS, because hair loss happens due to hair miniaturization and impact on miniaturization is not discussed in this article at all. Iow completely bald areas will likely stay bald and that's the problem that no medicine can tackle.

as is often the case, in mice.

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