... Do I Need?A : For average head size, here is my suggestion:12"-14": 2 bundles16"-22": 3 bundles24"-28": 4 bundles ... rule it is easier to darken the hair than to lighten the hair. We recommend to dye darker, since it is difficult for the original colour to fade.But ... out in different colors, some will be darker or lighter, when the bundles come in a combination will have this problem, it ...