How to do a root colour

Hi Guys
In this hair tutorial video I take a look at applying a root colour, this maybe basic. However sometimes this can also be the root of solving some issues with regard to coverage, longevity and vibrancy. With a few simple adjustments and following the basic colour rules we can perfect colour.
70%Rule
https://youtu.be/2TOxWFYXqME

Mixing ratios
https://youtu.be/xBoz2seQseU

Developers
https://youtu.be/QafMvJ7vd00

Timing
https://youtu.be/Zar8Htac3rM

Видео How to do a root colour канала Hair Tutorials