FWIW --

It sounds like, _for you_, the Proraso needs some help. So try one (or both) of the standard "helpers":

a) Some pre-shave oil (commercial mix, or almond oil, or even olive oil) rubbed on the "trouble spots" before you lather, or

b) some glycerin, either added to the lather, or rubbed on your face before you lather.

If neither one works, I'd agree with a previous post -- ditch the Proraso.

. . Charles