Blades are particularly effective. However, the design guide that there was soon a "jam" of hair, so that must have removed every time we pass the mower 3 or 4 times on the head in a row : painful! Also, I have not seen too much difference between the hair and the beard guide guide practice ... Less and less obvious than that this mower babyliss replaced. Finally, the ergonomic side: Hmm .... Nothing transcendent good!