M.Boss Barber and Salon is a Columbia, Missouri grooming business led by owner and barber Johnna Sirois, who purchased the shop in 2023 after years working there. The team focuses on men’s grooming services including precision haircuts, beard trims, hot shaves, men’s cuts, detailed scissor work, and brow waxing. M.Boss emphasizes both strong results and a welcoming experience in a rustic-industrial setting designed for comfort.