Tecnu is a treatment for poison oak. They claim it acts by removing urushiol, the oil that causes the irritation. I saw it recommended in numerous places, e.g., guidebooks, by people who seemed to know what they were talking about.
The Wikipedia article lists list a whole bunch of ingredients that basically make it sound like a type of soap, and gives a reference to a nonrandomized study, which may or may not be junk science.
But when I went to buy some, it said on the label that it was homeopathic. My inclination is to assume that anything labeled homeopathic is basically a placebo.
Are the ingredients suggested by Wikipedia actually present? Is it common for products that actually contain active ingredients to be labeled as homeopathic? If so, what does "homeopathic" mean?
How does one judge whether it makes sense to spend money on something like this?