Folligen has a higher % of copper-peptides than Tri. Tri has dyes to make it look more blue/green, to give a false impression of a high amount of copper-peptides. Even though Tri made it through two rounds for FDA approval, the active ingrediant is the copper-peptides. And one the guys that started Tri, is the sole owner of Skinbiology that makes Folligen.
Crinagen is more like revivogen in that it blocks DHT in the scalp.
Two seperate uses for these products.
There are claims that Copper-peptides can block DHT, but I doubt it. There just isn't enough proof. Consider them good for ridding the scalp of irritation.
So what exactly are you looking to use it for?