I have been seeing Aggy for my hair cuts, colours and treatments for a very long time now. Almost 12 months ago Aggy did a gk keratin treatment on my hair. I also purchased the Gk shampoo and conditioner as recommended by Aggy. The treatment is amazing, it made my hair glossy, thicker and so much more manageable. I have just had the treatment redone because I had started to notice my hair returning to its pre-keratin treated state. I'm so happy with the result! I'd also recommend the product to go with the treatment, it truely did extend the life of the treatment so much! And you use the smallest amount so one bottle of shampoo and conditioner lasted me almost 12 months. Totally well worth the cost!!