SHAKE UP is a range that has been formulated to camouflage white hair. The intensity of the result can easily be adjusted, and development times are short (from 0’ to 20’). Checking progress regularly is recommended. The SILVER UP shade has a glossy anti-yellow action on high percentages of white hair. It creates an extremely natural-looking effect and lasts for 2 – 4 weeks with no regrowth effect or undesired colour changes.