Review (5/5): The best ever, but discontinued
I stocked up and bought the last 5 from a vendor here on Amazon after reading reviews on a variety of sites. I made a large Excel table of over a dozen anti-frizz products and their ingredients and looked up each to check for use, safety, and effectiveness. Based on my research, this looked like the best product for my requirements.
This is by far the best anti-frizz product I have ever used. I have sensitive skin and am allergic to a lot of fragrances, but have no problems with this product. Although scented, it is a light citrus scent that does not conflict with my perfume or deodorant. It is very viscous, so a little goes a long way. I use less than a dime-sized amount and my hair goes halfway down my back. It doesn't make my hair look or feel greasy. I usually apply with my head upside-down, from the tips up. It comes out easily with my shampoo (I use Clean and Clear shampoo and conditioner) and doesn't form build-up. I have tons of long fine brunette hair.
I haven't used the regular strength so I can't comment on the difference.
I only wish this product wasn't discontinued. Get it while you still can =]