Safe for both on- and off-scalp application, the new Blue Oil Lightener System from Paul Mitchell (launching May 2018) features a gentle, conditioning formula that quickly achieves up to 5 levels of lift. When the Blue Powder Activator packets are mixed with the Blue Oil Booster and Paul Mitchell Cream Developer, it becomes the ideal gel consistency for easy mixing and precise application. Directions: Blue Powder Activator packets mix with Blue Oil Booster and Cream Developer to create the perfect on-scalp and off-scalp lightener! 1 packet of Blue Powder Activator offers up to 3 levels of lift while 2 packets will lift 5 levels. Can be applied on or off the scalp with a bottle or brush and bowl. Ideal gel consistency for easy mixing and precise application. ATTENTION: This product requires professional expertise. The seller is not liable for any adverse outcome resulting from the use of this product.