I waited two months before reviewing the product. The difference is impressive!! Cleaner hair, less oily, softer, no residue, more volume. On the downside, they don't smell, but that's okay. I prefer it to the strong synthetic fragrances. I recommend it!

The main reason I chose this particular product is for air travel with carry-on luggage, where I can't have many products in liquid form. I have oily hair and not all conditioners work well for me. So I am particularly satisfied that it suited me.
I tested it for a week, with almost daily washing. I deliberately lightly rubbed it on my hair (it's a bob, so it's not easy to apply only to the ends) to see if it would remove oiliness. I didn't feel them any heavier or drier.