Conflicting Temperature Instructions for Pseudo-Ceramide 104
Question
i have a question about the formulating instructions:
- it says to disperse in oil with a melting point of 122 F - 158 F
- but it also says to add at last step and avoid temperatures above 104 F
this is conflicting information, which do i follow?
Answer
The conflicting instructions you've noticed are common when dealing with high-melting-point lipids like Pseudo-Ceramide 104 (Hydroxypropyl Bispalmitamide MEA). For this specific ingredient in its powder form, you should prioritize the heating instruction to ensure proper dissolution.
Which instruction to follow?
You should follow the instruction to heat and dissolve the powder in oil at 122°F – 158°F (50°C – 70°C).
Pseudo-Ceramide 104 is a crystalline, oil-soluble solid with a melting point in that specific range. If you attempt to add the powder at the "last step" below 104°F (40°C), the powder will not melt or dissolve. This will result in a grainy texture, visible white specks, or the ingredient simply precipitating out of the formula. The instruction to "add at the last step below 104°F" is likely a generic safety guideline for heat-sensitive actives, but it is not technically compatible with the physical properties of this specific pseudo-ceramide powder.
Recommended Formulation Procedure
To incorporate Pseudo-Ceramide 104 successfully, follow these steps:
For Hot-Process Emulsions (Creams/Lotions):
- Add the powder directly into your oil phase.
- Heat the oil phase to 140°F – 158°F (60°C – 70°C) while stirring until the powder is completely melted and the oil is clear.
- Perform your emulsification while both the oil and water phases are hot.
- Cool the mixture under continuous stirring to prevent the ceramide from recrystallizing into large grains.
For Cold-Process or "Last Step" Addition:
- If you must add it later, you must first create a hot oil premix.
- Dissolve the powder in a small portion of stable oil (like an ester or hydrocarbon) at 158°F (70°C).
- Add this hot premix to your main batch while the batch is still warm (around 113°F – 122°F / 45°C – 50°C) to ensure it blends smoothly before the mixture thickens.
Technical Tips
- Heat Sensitivity: While you must heat it to melt it, avoid prolonged holding at temperatures above 167°F (75°C). Short-term heating to 70°C is necessary and safe for this material.
- pH Range: Ensure your final formula stays within the stable range of pH 3.0 – 7.0.
- Storage: The raw powder should be stored in the refrigerator (4°C - 8°C) to maintain its long-term shelf life.
