Cut the soap base into squares and place into a double boiler or a glass bowl fitted into a pot of water. Heat over medium heat until the soap base is melted and clear.
Once the soap is melted, add the sweet almond oil to the double boiler and stir to combine.
Remove the pan from heat and allow the mixture to cool slightly (but not harden), before adding the essentials oils.
Stir to combine, then whisk in the food coloring.
Sprinkle a pinch of Himalayan salt into bottom of each cavity of your silicone mold.
Gently pour the soap mixture from the double boiler into the mold, filling each cavity just to the top.
Sprinkle a pinch of salt on top of each salt scrub bar.
Spray the top of the soap with the rubbing alcohol to dissipate any bubbles.
Allow your salt scrub bars to harden for at least one hour or until they are completely cooled. Once they're cool, gently pop each salt scrub bar out and store in an airtight glass container (like a mason jar) until you're ready to use them.