Add Ons are simply addtional services you would like done on your bundles or unit.  All lace units and bundles come in the standard 1b natural black color.  Add some spice to your lace unit. Add On for your unit to be colored, cut, styled or all 3. You can add blonde highlights, fringe bangs, heavy layers, burgundy color, ginger color, ash blonde and so much more. You can add for your unit to be parted in the middle, right side, or left side. You can also Add On for your wig to be styled straight or curled. Isn't that awesome! You're able to fully customize your lace unit so get as creative as you want! You can only Add On color or highlights to bundles so cutting, styling or parting will not be applicable. Please be aware that if you choose NOT to Add On any additional services your unit will come in the standard 1b natural black color, shampooed, conditioned, middle part, not styled.