I want to try making some different soaps with the powder style colorants. My question is how do you avoid having the colorant show up on your skin when lathered up? I see so many colored soaps with bright colors and was wondering if these do this or is there a special technique to doing it. I tried making some soap a couple of weeks back with red swirls in it to resemble peppermints. Thought it would be cute for stocking stuffers! I has issues with my color not going all the way through, but I will work on that. I tested a small piece of this soap today and the lather was slightly red. I don't think my customers would be very happy with this. Any suggestions?