Schwarzkopf Professional Hair Primer creates the best hair conditions for colouring, allowing uniform and even colour results from roots to tips. It helps to neutralise metal ions and impurities without affecting the colour or lightener performance. It's a caring product with detangling properties that allow for a quick, even and easy colouring experience. It's formulated with a keratin complex that detects and fills in uneven spots for an overall equalised hair shaft and further-strengthened hair fibre. Simply spray on to mid-lengths and ends. Don't rinse, and allow to dry or blow-dry, then apply hair colour as usual. Comes in a 250-ml spray bottle.