I first read about stevia a little over a year ago. I was convinced enough to try and have been using it ever since. I have hypo-glycemia (low blood sugar), however, I no longer suffer from the extreme drops in blood sugar levels. I drink 10-15 drops of the darker liquid stevia every day in yerba mate tea. This gives me a nice boost in the morning, staves off my allergies and helps to balance my blood sugar.
I know of a little girl who lost her hair due to extreme thyroid problems when she was younger. I had remembered reading that if you combine a few drops of the dark stevia with creme de cocoa soap and lather on your scalp, you may be able to re-grow hair. I truly didn't know if this would work and was very skeptical but my heart went out to this 12 year old that has to wear wigs everyday so I told her parents about it. She's been using it for about two months now and her hair is re-growing. Granted, ever so slowly and patchy on her head but we're all very hopeful that she will continue to grow gorgeous locks!
Bottom line, stevia is extremely sweet and takes a little getting used to. It's a wonderful alternative to artificial chemicals. It has zero effect on blood glucose levels. I've found it in dry packets, clear liquid and dark liquid forms.
I've also heard it's good for acne but I have not tried that myself. Apparently it tightens a little bit as it dries on your skin. Put a light coating on yoru skin. Leave on overnight. It washes off very easily. After several days you should see much improvement.