The Easiest Homemade Shampoo Bars You'll Ever Make
Feb 25, 2019·Spray the top with the rubbing alcohol. This prevents bubbles from forming. Allow to harden at least one 30 minutes to one hour. To test if the soap is ready for the next pout, blow on it. If you see ripples, it is not ready. Repeat for the next two colors. Allow to harden at least one hour.