I have read conflicting information on which phase to add Polyquaternium 7 (and 10 for that matter). I have read from one vendor to add it to the water phase,, whereas another vendor says to add it in the cool down phase. Does it matter? And if so, which phase does it belong in?
I have also heard conflicting information about Vitamim E and whether it can be added to the heated oil phase or needs to be in with the cool down ingredients.
Thanks in advance to anyone that can clarify this for me!