In a bowl, add in corn starch, citric acid, and baking soda stir well. Add in coconut oil and stir with a fork to keep light and fluffy. Split mixture in half. Add in fragrance and green gel coloring to one bowl and stir. Add fragrance and red gel coloring to the second bowl and stir. 

Using the mold, pack both sides of mold then press together. Once you press together leave in the mold for about a minute then remove and place on a tray to dry overnight.