I have chronic sinus problems, so when I get a cold or flu I really can't breathe through my nose, which can be hard if it lasts for days. Also, I don't like using medicated nasal sprays, since they constrict the blood vessels in nose. These are perfect to open up my nostrils and let me get some air through my nose. The advanced ones have double strips compared to the regular, but I like both, depending on severity of the situation. The only bad thing is that they strip a bit of skin when I am peeling them off - but I consider this as an add-on (clearing out blackheads?).