Question: how to use blk diamond charcoal?
Answer: Wet your toothbrush well. Place toothbrush on top of a napkin, piece of toilet paper, or paper towel. Gently twist open your blkdiamond charcoal teeth whitening containers top. Carefully dip your wet brush into the activated charcoal powder. Start brushing! ... Gently brush for 3 to 5 minutes. Rinse!