The difference between the volumes of developers is that 20 volume gives 2 shades of lift, and 30 gives 3 shades of lift. If you are coloring you your hair darker than your natural hair you want 20 volume and also if your only going up 2 shades of your natural color you would use 20.
#1 primary colors make additive colors
The difference between the green and blue kyanite is their colors.
they look different from each other
Cream hair colors are generally mixed with a cream developer.
Contrast
its so you can tell the difference between them
Yes. They are different colors.
Better tiles will be thicker have a better finish heavier more colors in the glaze may have a square edge or a fancy textured edge Price
analogous colors are next to each other on the color wheel. complementary colors are across, or colors that are opposite. (for example, red and green.)
i think one is substractive (the mixed colors are lighter) and the other is aditive (darker)
No. Tests have verified that they can determine the difference between colors.
what is difference between poster and painting