Matrix Opti Smooth is a permanent smoothing system for cold-smoothing or heat-straightening hair, in 3 custom strengths for normal, resistant or sensitised hair. The treatment helps protect, fortify, and condition the relaxed hair during the service to create soft, shiny, well-conditioned results.​

Enriched with pro-keratin, the system is enhanced with a unique interim treatment that contains a patented ceramide molecule to help protect, fortify, and condition the relaxed hair during the service, leaving hair feeling conditioned, soft and shiny.