Jury is Out
I gave this product 4 stars because it works.  But I'm still not sure it will work for me. There is no noticeable odor. It feels like I have to use more of the product that I thought I would need, but I was doing a large area (one leg). I experimented on one leg. It took a couple of days because I wasn't using enough of the product. But eventually I could see color on my leg.
Rating: 4 stars