Razor burn for me is usually where ever my new shaving venture area has brought me. This week I got a real nasty one under neath my chin and my left lower jaw area. I think it was more skill and tech along with the pressure I used in those unfamiliar areas. The razor was definitely sharp I just got it back from Bobs razors. I use to get it on my cheeks real bad until I got my razors sharpened and used no pressure in those areas.