It works awesome! I've seen results immediately, within days! However, you can't just do it one or two days, it must become a ritual along with all your creams and serums every morning and night. Now, i use another type of one for the morning, sometimes I'll use this one for my cheeks in AM, but mostly use every single night. As for battery comments, you have to make sure it's being turned correctly. As mine did that at first, then I realized I didn't have the bottom part screwed in correctly. Once you do this, should have absolutely no issue! Love it, highly recommend it! Got mine for free, so I was very lucky and happy, thanks to IPSY! Wonderful tool, but again not going to work for a One time deal, gotta keep at it. Just as you would with working out! If that makes sense! :)