Firstly, I was really impressed with the speed in which I received the product! It was pretty much the next day.
The product itself produced great results, after the first treatment (72 hours) I washed my hair and left it to dry naturally and woke up with frizz free hair. My hair is naturally curly, and whilst it loosened the curl it didn't take it away completely (which is what I wanted)
The only downside I've experience was when applying and drying in the product it did cause my eyes and throat to sting.
But aside from that it's been a great experience!