Heating Cleansing Gel Ingredients on Gas Stove (Double Boiler Method)
Question
How to heat ingredients for a cleansing gel formulation using a gas stove via the double boiler method? Specifically, clarify the process for heating ingredient groups 1+2+3 (oil phase) and 4+5+6 (gel phase) to 70-80°C and the correct order for combining them (which phase should be added to the other).
Answer
Based on the conversation and your question about heating ingredients for the cleansing gel using a gas stove, the staff confirmed that your proposed method of heating indirectly using hot water (double boiler method) is possible, although it might be a bit more complex.
Here's how you can proceed, following the staff's instructions:
- Prepare for Double Boiler: You will need two containers. A larger one to hold water and place on the gas stove, and a smaller one to hold your ingredients.
- Heat Water: Heat water in the larger container on your gas stove.
- Heat Ingredients (Separately):
- Place the mixture of ingredients from steps 4+5+6 in the smaller container and place it into the hot water. Heat this mixture indirectly until it reaches 70-80°C. Use a thermometer to check the temperature.
- In a separate smaller container, place the mixture of ingredients from steps 1+2+3 (the oil part). Heat this mixture using the same double boiler method until it also reaches 70-80°C.
- Combine Mixtures (Crucial Step): Once both mixtures have reached the target temperature (70-80°C), slowly pour the heated mixture of 1+2+3 (the oil part) into the heated mixture of 4+5+6 (the gel part).
- Mix Continuously: While slowly adding the oil part, continuously stir or blend the mixture until it is well combined. Keep adding the oil part gradually until all of it has been incorporated into the gel part.
- Important Note: As the staff emphasized, do NOT add the gel part (4+5+6) into the oil part (1+2+3). Always add the oil part into the gel part.
Using the double boiler method with a thermometer will allow you to control the temperature within the required 70-80°C range safely on a gas stove.