This is another Halloween specialty and again you can make this formulation in any form and all through the year. These are 2in1 foaming scrub bars that are easily rinsed away.
The most challenging part of the procedure (for novice formulators) is pH measurement and adjustment. Here you need to be fast and perhaps do some adjustments after you have made your first batch. Since the bars settle and harden rather fast you don't have much time to fuss around the pH. You need to take a sample for pH measurement when the batter is still warm and fluid and pour your batter in the mold cavities. You will then come back to pH measurement and based on the results you have you need to adjust the amount of the lactic acid you use in the next batches. Make your first sample only in 50-100 gr batches and scale up after you are happy with the pH (we aim for a pH between 4,5-5,5 for adults)
Procedure:
1- Blend phase A and B in heatproof vessels
2- Heat both phases around 90 C
3- When both phases are uniform blend A and B
4- Stop heating and add phase C.
5- Take a sample for pH measurement and put is aside
6- Add phase D and fill in the mold cavities
7- Put the mold in the fridge between a few hours to overnight
8- Go back to the pH sample. Make a 10% dilution and measure the pH
9- Depending on the pH you get adjust the lactic acid dosage for your next batches (we aim for a pH between 4,5-5,5)
