IGORA Vibrance Activator Gel 1.9% / 6 Vol is a low-volume, gel-form developer made to activate Schwarzkopf Professional's IGORA Vibrance tone-on-tone colour line — it is a professional developer, not a stand-alone colour or an at-home product. IGORA Vibrance itself is an ammonia-free, deposit-only demi-permanent system: it tones, glosses, refreshes faded colour, or blends grey (up to roughly 50-70% depending on the shade family) without lifting the hair's natural level.
Per Schwarzkopf's technical guidance, IGORA Vibrance colour and activator are combined at a 1:1 ratio and processed for 5 to 20 minutes, with full-head or regrowth applications typically toward the longer end of that range and gloss/refresh services toward the shorter end. The gel consistency (as opposed to the companion Activator Lotion) is intended for bottle application, making it suited to techniques like root touch-ups, root smudging, and colour melts where a controllable, less runny mix is useful.
This is a licensed-colourist product used within a salon colour formulation, mixed to order at the bowl or bottle and never applied without the corresponding IGORA Vibrance colour.