Monday, May 23, 2016
Weekday Wonderings: Are there any oil soluble humectants? A reminder about coconut oil in the summer
Thanks for all your positive thoughts on me going part time, and thanks for all the great ideas on how I could supplement my income! I really appreciate all the expert advice you have offered, and encourage you to keep it coming! I'm not a business woman - as you can probably tell with all the giving things away for free stuff I do around here - so this is a very unfamiliar place for me. So many of you entrepeneurial types have approached me to offer support and guidance, and I feel so lucky!
Also, thank you for all your kind words on the spammers. Last night, we had only one who posted a few things, then seemed to give up. Woo! We may be winning the fight! I am still moderating comments on posts that are more than 2 weeks old, but if we can make it a week with only a few spammers - we'll never be rid of them, unfortunately - then I can go back to the previous commenting system.
ARE THERE ANY OIL SOLUBLE HUMECTANTS?
In this post on humectants, SwiftyNoLonger wrote: Are there oil-soluble humectants?
Fabulous question! Hmmm, not that I know of off the top of my head. I know it's been said that olive oil is a humectant, but I haven't found any evidence for that. Lecithin might behave as a humectant, so that might be a choice for an anhydrous thing.
Humectants are hygroscopic because of the hydroxyl groups attached to the chain. This is a glycerin molecule - the hydroxyl groups are the OH groups representing bonded hydrogen and oxygen atoms. You might recognize OH from alcohol - the majority of humectants are poly-alcohols or polyols. The strength of the humectant is dependent upon on the ratio of hydroxyl groups to the carbon atoms. Glycerine has three carbons and three hydroxyl groups - a very nice ratio indeed!
Oils don't have hydroxyl groups or those "OH" groups, so if this is the only way for something to be a humectant, then an oil cannot be a humectant. There may be some molecules within our oils that contain these groups and they might be able to be a humectant, but I haven't found any proof of this yet.
The humectants section of the blog
Glycerin: The science
A quick reminder for everyone as we go into the summer months, neither coconut nor babassu oil works as a good base for a whipped butter, lotion bar, or other thing that could melt at 24˚C or 76˚F. All you have to do is leave that fabulous lip balm in your pocket or in the car, and you'll have a pile of greasy mess before you know it! You can use it in lotions without issue, but anhydrous or non-water containing products that contain it as the main ingredient will end up all over your stuff!
A few relevant posts that might interest you...
Coconut oil? Coconut oil!
Why don't we use coconut oil in sugar scrubs?
Coconut oil in warmer temperatures