Dennis K. Hairdresser. Amsterdam. A barber who specializes in sharp buzz cuts paired with clean, well-defined beard work. Known for fast, precise combo services that keep regulars looking fresh. Hairdresser. Amsterdam. A barber who specializes in sharp buzz cuts paired with clean, well-defined beard work. Known for fast, precise combo services that keep regulars looking fresh. Hairdresser. Amsterdam. A barber who specializes in sharp buzz cuts paired with clean, well-defined beard work. Known for fast, precise combo services that keep regulars looking fresh.