I dont think they make your pores bigger, they are supposed to clean the clogs out of your pores, and when you keep your pores clog free they are supposed to go smaller, i used to use them alot too, i think they actually made my pores look smaller, i want to start using them again.
i've used them before, but tbh my pores aren't bad to begin with so i didn't really notice a difference. They're nice to use though once in a while, i probably wouldn't use them all the time though...
i agree with perlanga. you might also find them larger simply because your pores are clean. i like those strips but gosh i always have glue on my nose each time i remove them. soo annoying.
Well I think there are better ways to remove the bleakheads.
I use AHA lotion daily and Borghese Active Mud once a week. Products like AHA/BHA/Differin helps your skin to remove the dead cells, and by using the Mud it makes the blackheads comes out more that can be easily removed.
The nose strip can't solve the problem, in fact it might even irritate the skin (before when I use it my nose always turns red).
I have used them before, and I like them! My pores almost always look smaller afterward. I have very sensitive skin, so I usually use the "face strips" on my nose, because they aren't as intense. In response to Isometh, you can put cool water and then toner on your nose after you rip it off, to close your pores, and then moisturizer so it doesn't dry out. That's what I do and my nose is usually fine.