Re:

Moreover, are you aware of the transdermal migration rate of castor oil thru the scalp ? Do oils readily absorb into the scalp ? Or is their penetration enhanced by surfactants such as Dawn soap ? If you google transdermal absorption enhancers or take a look at a patent office website and use their search function, then you find that yes indeed surfactants do increase transdermal absorption, which means on can readily postulate that it is perhaps the micellullar emulsion including castor oil, water, and Dawn soap in combination which is responsible. Point is that there are many variables and quick conclusions usually lead to the wrong answers. Tweet