The present invention relates of a Cosmetic Kit and it composition to do a conformational change of the hairs (curling or straightening) and the respective methods of application, where the composition of the kit is as follows: Cleansing Shampoo, Transformation Cream (Base cream), Enzymatic Gel, Neutralizer, Conditioner and Finishing Fluid, that can be used also in extreme fragile curly hair acting specifically in the conformational change of keratin, mainly on its disulfide bonds where the Transformation Cream (Base cream) should be used together with Enzymatic Gel that have enzymatic activators and the proteolytics enzymes E.C.: 3.4.21.14—CAS# 9014-01-1 and INS1101i (Protemax® 580 L)； E.C.: 3.4.21.62—CAS# 9014-01-1 and INS1101i (Prolav® 750)； and, E.C: 3.4.24.28—CAS# 76774-43-1 and INS1101i (Protemax® NL600C) that when combined act in a specific and smooth way in the fibers. The invention also presents an application method of the products that compound the Kit (a Protocol).
