The present invention relates to be used for keratin fiber,The preferably method of the cosmetic treatments of hair,Including at least the following steps,The following steps include: a)To the keratin fiber spread compositions,The composition includes to be selected from fat-body,At least one substance of non-silicone polymer and surfactant,b)Apply mechanical tension to the keratin fiber,And c)In range from the pressure of 50 000 to 250 000Pa,In the presence of at least one solvent of the vapor form contacted with keratin fiber,The keratin fiber under mechanical tension is exposed to microwave,And in entire period being completely dried there is no keratin fiber for being completely exposed to microwave,Before Microwave emission,By evaporate contact with keratin fiber existing at least one compound fully generate the solvent of vapor form,Step a)Occur in step c)Before.
