I have been using this for a month now. My hair is extremely dry and frizzy and this works well, but nothing extraordinary I would say. You need a lot of products and keep it for 2-3mins as instructed. It’s not “the longer the better”, keeping it for long time might dry out your hair even more. I use a good moisturising shampoo before this and a good serum after, and the end result is good. Not sure how effective the conditioner is by itself. Lastly Tresemme Keratin Smooth conditioner gives me the same results, at a cheaper price.
My hair got smooth because of this conditioner.