Mar 13, 2018 How to Make Water Clear After Adding Food Coloring. Stir with the glass stirrer or allow the food-coloring particles to disperse on their own. Fill an eye dropper with liquid bleach and drip it into the food-coloring beaker, one drop at a time. Stir with the glass stirrer, or let the bleach disperse, and continue to drop liquid bleach until the color is completely gone.