Add FO and 1 tsp. of kaolin clay PPO to the castor oil about an hour ahead of time to help "stick" the fragrance.
Make Faux Seawater - 1 quart of warm water, 1 tbsp. of sea salt and 1 tbsp. of baking soda. Make up a quart at a time and store in refrigerator.
Mix lye solution with the seawater...