Jojoba "oil" is not actually an oil, it is a plant wax (http://en.wikipedia....wiki/Jojoba_oil). The molecular structure of jojoba oil is similar to that of human sebum, thus it penetrates human skin easily without being greasy. It "tricks" the skin into thinking it has made enough sebum so often your skin will stop producing as much oil.
Jojoba oil is nontoxic, non-comedogenic, and hypoallergenic. Nearly everyone can use it (but I would test it on a patch of your skin for a few days first before using all over, just to be safe, you never know). Jojoba molecules are smaller than human pores so they gently moisturize and push out any cloggage or help slough it off. Thus, doing a gentle jojoba oil massage on your face will not only help cleanse your pores but also make them soft and smooth.
Because jojoba molecules are tiny, they could be acting as carriers for other things you use in conjunction like vitamin E oil or BP. Do NOT use vitamin E oil without lots of jojoba oil, it will clog your pores like nobody's business. Sadly, I am speaking from experience. WITH jojoba oil, V-E will be a super-moisturizer (V-E molecules are HUGE- you can google this- and they will clog pores on their own).
Personally I have oily-ness in my T-zone and when I started using jojoba oil (which I was reluctant to do at first because it seemed counter-intuitive) it actually helped the oily-ness. This is when I dabbed a few drops on, not smeared a handful on my face.
I think adding a few drops to your moisturizer is a great idea in dry climates or seasons. I find that in the summer here I don't need it because it is humid, or I only use it instead of moisturizer and only a few drops. I also use it on my legs after shaving.
Anyway, I hope some of this information helps convince the skeptics that it's a great product overall!
*Just a warning, about 99% of people will love jojoba oil and have no reaction to it, but there are some that have reported adverse reactions to it on acne.org. I am not sure why that happened but I would rather be safe than sorry. So if you get to try it, please try it on a patch of your skin for a few days before deciding whether to continue.
Edited by Sweetsleep, 23 January 2010 - 08:33 AM.