pdg2 blockers

[cp9]

Can someone please tell me what a pdg2 blocker is? Sorry, I'm still very new on all this.. I came across some forums and have heard people completely stopping their hair loss with Cetirizine and INDO/CHROMO? What are they exactly and what do they do (scientifically)? Please enlighten me. Thanks!

[PatientlyWaiting]

"People" Who are these people? I saw only one person on Hair loss talk using Cetirizine, who was also using a thousand other products. I believe he labeled his treatment the KSR, the kitchen sink regimen. Something like that.