@Mulloch94 said in Experiments with transdermal hormones:
@brightside Interesting. So MCT oil would be a viable co-solvent along with ethanol? I only ask because I've never used it. Tocopherol has been an excellent lipid-based compound and I haven't had the need to venture out much further than that. It also mixes with more volatile solvents like ethanol without an issue too. I've noticed a mixture of ethanol & tocopherol to be particularly useful in getting DHT it solvent quite easily, which I've always noticed can be tricky as it's slightly more temperamental than normal T base.
I personally don't see a reason to use it.
In order to boost penetration of fat soluble actives, you need to disrupt the lipid matrix. (unless relying on other mechanisms like denaturation of keratin proteins like DMSO) Fats like MCT and olive oil do do this, but only because they are a lipid that's not as structured as your lipid matrix. Pretty much any fat is less structured than your lipid matrix.
But, if you look at the stratum corneum lipid matrix, you can see that triglycerides are kind of massive in relation to everything else.
Why would you use more stable molecules, like MCT or other triglycerides instead of opting for smaller, more volatile and more disruptive lipids? (surfactants too) Simply switching from triglycerides to fatty acids drives up absorption dramatically, especially if the fatty acid is short or unsaturated.
Actually, I have yet to see a single study that says MCT oil is effective at increasing transdermal penetration of hormones.
Not only that, but MCT does not hold any hormone. MCT also sucks at mixing with ethanol. I did an experiment a year ago with a three dishes containing ethanol, ethanol+MCT, and ethanol+stearyl alcohol. The ethanol+MCT one crashed a few hours in (I was testing evaporation speed, so they were uncovered). I started out with roughly 80% Ethanol, 20% MCT, so that means the point at which it crashed was probably like 30% MCT, and 70% Ethanol? Something like that, but I never experimented to confirm.
To summarize, MCT isn't that miscible with ethanol, it's not a penetration enhancer, and it doesn't even hold any hormone. So then, why use it?
Moisturization is the only use I see.
Sorry for my little rant lol
It's interesting about the vitamin E. I wrongfully discounted it in the beginning, but clearly you and others are having good experiences with it. I'm kind of put off of the idea of using tocopherols since they are so thick. What kind of tocopherols are you using?
I'm asking because I'm concerned about the policosanols that are in the TocoVit type stuff. Since they're very long acids, they would probably add a structuring effect to the lipid matrix - something I don't want. Also, I'm curious if Vitamin E's effect comes from not necessarily by disruption, but by enhancing solubility of the hormone, like you mention.
Hmm, what do you think about this?