Cut the soap into 1 inch chunks. Melt the soap in the microwave for 30 seconds. Stir. If it is not completely melted, put it back on for 10 second increments, until fully melted; stirring each time.

Add the lemon and lime zest.

Add the lemon essential oil. Mix well.

Pour into the silicone mold.

(Optional) Lightly sprinkle with more lemon and lime zest on top of the liquid soap mixture.

Mist lightly with rubbing alcohol to help reduce bubbles.

Let set for about 3-4 hours.

Remove from mold. Using the straight scraper, cut the soap into 2 inch bars.