I copied this from the ingredients at their site.
(DHT Block proprietary blend (saw aplmetto berries, beta sitosterol, pumpkin seed extract, quercetin)
They mispelled palmetto, but anyway, saw palmetto is used to treat enlarged prostrate and at another site I read that it "may" help with hair loss. I'm skeptical.
I'm trying B vitamins. Biotin seems to be helping my nails so today I decided to start the B complex and see if helps my hair.

Thanks, Gerti,
I'm skeptical with the NuHair also. I do take Biotin every day and I should probably also take the B-complex. Hope it helps us both. Good luck.