Hi Ladies!! I've been researching Henna as a healthier option for coloring my locks (black). I wanted to stay away from commercial coloring products if possible. I don't have a PPD allergy but my mother does and I am just playing it safe. Has anyone colored their locs using Henna and Indigo? Have you had any issues with buildup in the loc from either of those? OR is there a GOOD ppd free hair color you can recommend?

Loc'd since 11/22/2010 and lovin it!!!!