Secret Code PLEX 3 Leave-In Repair Conditioning Spray - detailed review This leave-in conditioning spray is designed as the final step of the PLEX system, focused on daily styling, protection and frizz control. In terms of concept, it plays a role similar to products like Olaplex Nº6, aiming to improve manageability, smoothness and the overall appearance of damaged hair. It is important to clarify the mechanism. PLEX 3 does not contain the patented Olaplex bond-building ingredient (Bis-Aminoprop