>>1279063Using Multiply this way correctly requires you to know what color you're trying to get before you make use of it. Figure out what color you want, say, the main color of the hair to be (as in, the base color, not the shade or highlight colors), then take a look at its RGB value and write that down. Also write down the original RGB value for that section. You'll have two sets of three 3-digit values, one set for the target color (brown) and one for the original (say, blond, but yours might be different).
Now, plug values into the following formula and write down the results (being sure to round to nearest whole): result value = ( 255 / base value ) x target value.
Ex: 128 = ( 255 / 64 ) x 32
Plug the result values into the proper RGB fields, and use that color with Multiply on the hair.