Simplifying a recipe: The oil phase of a body butter, Rosi asked: We know that not many ingredients will penetrate our hair, coconut oil has an affinity for hair. Now, what about our skin does oil penetrate our skin and does it benefits our skin?
To which I answered: No, it won't penetrate our skin because the fatty acids are just too large. (As a note, very few oils penetrate our skin as the fatty acids are just too large!)
Then Rosi asked: So, there is no reason to add expensive oils to our creations since it won't penetrate neither the hair nor the skin?
I started answering this question and then I realized that we needed to review and learn a bunch of stuff to be able to answer this question. What is an oil? What's in an oil that could penetrate our skin? Why can some things penetrate our skin and others can't? What does it mean to talk about "skin"? And so on! (How exciting!)
skin chemistry and types section of the blog before we move on to tomorrow's post on oil chemistry?
Chemistry of our skin: A revised overview
Chemistry of our skin: Stratum corneum lipids
Chemistry of our skin: Transepidermal water loss (TEWL)
These will give you a nice idea of the stuff we'll be discussing over the next week or so!
Join me tomorrow as we take a look at some things we can find in our oils like triglycerides and fatty acids!