I purchased four of these stars back in the fall of 2012. I put one pair in my helix piercings and one pair in my highest lobe piercings the day I got them, and I haven't ever removed them. I have seriously been wearing these earrings, from this seller, every day for over five years. I have had many issues with allergic reactions while wearing other earrings in the past, so I do regularly rotate and clean my jewelry, and I have never had an infection while wearing these stars. They're still bright silver-colored with no tarnishing. Clearly, I find them very comfortable, and they've never fallen out. I do use occasionally use a small jewelry plier to tighten the screws.
(These little stars also hold a special place in my heart because I lost nearly everything I owned in a house fire a few years back, and my stars are one of very few things I own from before that fire. It's nice to have a piece of jewelry that you can always keep with you.)