I am a newbie too but another victim of Proraso leaving heavy scum on my razor. I just cleaned 2 months worth of it off my Merkur with some Bon Ami powder. Both Cella and Proraso leave a white residue that hardens and is not washed away easily. Bon Ami and an old toothbrush did a wonderful job in 5 minutes. I enjoy Italian creams and the whole wet shaving experience so I am not complaining yet.