About the "Wilkinson Sword Hydro Power Select" (in my short form simply "HPS"), I can only report positive. There are three levels of vibration that you can set for his purpose in succession. The higher the vibration level, the lower the formation of new skin redness. The battery lasts an average of ten weeks. (The package can be found to no evidence.) For people with extremely sensitive and highly prone to irritation of "HPS" is a healthy alternative. Who is susceptible to Aloe, should the hydraulic grab 5-blade and not the supplied »HPS« cut blades. Existing redness or pustules reduce after a while, until they eventually disappear altogether. Be careful when cheap shaving cream! In it are many substances that are not good for the (extremely) sensitive skin. Who has no skin problems, but these can be used. It is advisable in any case or shaving gel Wilkinson or a comparable manufacturers such as Nivea or Florena; at least for sensitive skin should not be too much attention to the price, since a drawn through skin irritation are not a pretty sight for the people and of course for yourself. Tip to the blades: The manufacturer recommends replacing the blades once one or two gel chambers are empty. Although this is supposed to be only a "recommendation", but is pure wonâ. Because the number of full gel chambers says nothing about the sharpness of the blades. Therefore, the blades are also well used if only a gel chamber is still filled. For people with very sensitive skin, it is not financially advisable also to use the sound even when all gel chambers are empty, the blades themselves but still sharp, because the empty chambers are filled during shaving with foam and thus again a pleasant gliding care. Conclusion: The ultimate solution for people with sensitive skin who want to finally feel good again in their own skin