I have used Kerastase for ages and sometimes I like to try something different. Usually I am disappointed and go back to Kerastase (which is getting increasingly expensive). Michael Van Clarke has recently launched a 3 steps method that helps keeping your hair in shape. No silicone or nasties, it leaves my hair shiny and soft. The line includes a pre-wash (to leave overnight every other wash) a shampoo and a conditioner. I cannot comment on whether my hair is longer or not, but my hair do look in much better shape. The product does not have any scent (which is a big plus for me as I tend to dislike scents in shampoos as they linger forever), is moderately thick and a little goes a long way. If I use the three products together the results are spectacular, but if I use only the shampoo and the conditioner the results are average (not bad but not great). i want to try the Gielly Green products, aromatherapy at its best.