Developer Lotion - Specially formulated to provide intense, long-lasting color results with excellent brilliance and shine. Enhanced with BondPro+ technology to provide essential protection during the color process. 2% - 7 vol.: To be used with Colorance3% - 10 vol.: To be used with Topchic, Colorance and Oxycur.6% - 20 vol.: To be used with Topchic and Oxycur.9% - 30 vol.: To be used with Topchic and Oxycur.12% - 40 vol.: To be used with Topchic.