hia ll hope u can help i have just bought ion performance colour in light ash brown to cover yellowy blond but as this is the first time ive bought a proffesional hair colour i am confused about mixing the tube says mix1+1.5 wiith ion colour developer and the tube has numbers 3-4 1-2 1-4 all i need to know is do i use all the tube thanks sorry for the essay!!!!!!!!!
That means you mix 1 part colour with 1.5 parts developer. I guess the numbers on the side of the tube mark the quarter, half, and 3 quarter of the tube. Use as much as you think you need to cover your hair.