I use the Mach 3 with his blade as a second razor. So far I have not had problems with the blades Terms of skin irritation or unclean shaves. Points that are very important for me because I use the shaver and his blades mainly insets in the shower. It can be quite uncomfortable when the skin into the Achselhölen is gereitzt and two days burning. This worry I did not at these blades. By the three successively arranged blade reduces the Number of trains on one and the same place considerably. The blue indicator strips reliably shows when the next blade change is pending. Thus you avoid shaving with dull blades tear more than cut. The blades supplied me hitherto invariably originals and no overpriced fakes.