I have both products and alternate them daily and nightly.
I find the PPG in Folligen to be irritating, causes me itching but subsides.
Tricomin, on the other hand, feels fantastic. The cool, soothing sensation that it gives you is just great.
I may be switching exclusively to Tricomin after I finish the Folligen.
Folligen is really good, it's just strong for me, even if I dillute it a little, it's still pretty itch causing for me due to PPG.
Tricomin has no PPG.