Product Description Lowers Ammonia levels of colour and is specially formulated for results throughout the entire Activia and Diamond Colour Ranges. Classic Activia Plant Colours when mixed with Activia Oxilen: (ammonia levels oscillate between 0.72% > 0.8%) Activia 5+ Colour System when mixed with Activia Oxilen: (ammonia levels oscillate between 0.3% > 0.4%) Available in: 5 Volume (1.5%), 9 Volume (2.7%), 20 Volume (6%), 30 Volume (9%) and 40 Volume (12%)