did OP mean the contacts that you wear continuously for 30 days? Cos those are def bad regarding oxygen supply to eye....but yeah, if you were referring to monthly lenses that you remove at night and clean/soak, then, as above, depends how often you're wearing them. As Navajo said really. Quick Q, you know you said the longer you wear them, the more they dry out? well When you soak them at night, does that replenish the moisture? And does that mean the longer you soak them (like 15 hrs rather than 10 or sumfing) then the more 'moisturised' they will be in the morning? Soz if I sound silly, just curious x