Sem D. Hairdresser. Amsterdam. Sem is a barber offering precise cuts, beard shaping and grooming, with attention to clean lines and a comfortable, relaxed chair experience. Hairdresser. Amsterdam. Sem is a barber offering precise cuts, beard shaping and grooming, with attention to clean lines and a comfortable, relaxed chair experience. Hairdresser. Amsterdam. Sem is a barber offering precise cuts, beard shaping and grooming, with attention to clean lines and a comfortable, relaxed chair experience.