The site looks a little shady to be honest. The capsules appear to have some helpful components but don't really seem to be worth the price; frankly it looks like another snake oil. Personally I wouldn't bother with it.
I've been drinking black tea since I was a kid (10 maybe) and I'm 18 now and have been suffering from some very aggressive diffuse thinning for the past couple years so I don't think that black tea is gonna do any large help in hair loss; I'm sure it might be decent as a supplement but I...