Best Shampoo/Conditioner Experiences - Hair is Starting to Thin!

[HelpMyHair]

Hey all, I'm a 36 year old man, and have recently noticed that my hair is thinning at the back of my head (ugh). I've always had a pretty gnarly cowlick back there, and now my hair seems to have had enough of it.

Are there any shampoos and/or conditioners that anyone has found succes with? My wife picked up some Bio Follicle, which I've been using for a couple weeks - anyone had success/failure with that one? I see some good reviews on Amazon for Pura d'or and Lipogaine. Anyone on here with positive/negative experiences with any? Thanks all!!