Full-head men's hair colour using L'Oréal Inoa or Wella Koleston Perfect — ammonia-free, low-odour formulations safe for first-time colour clients. Used for grey coverage (matte black, dark brown, salt-and-pepper blend) or fashion shades (burgundy highlights, ash-grey tips). Includes consultation, mandatory 48-hour patch test verification, application, 30-minute processing, wash, conditioning, and blow-dry.