I use organic cotton in my dripper that I bought from a health store. I change cotton every day, sometimes twice, as it gets manky pretty quickly. Not sure how often I recoil. Maybe twice a week.
I've started using my licorice juice in a T3S (clone) with a kangertech head wound with 0.3 wire & a wick made from cotton wool as the licorice is a git for covering the stainless steel mesh wicks in my genesis atomizer within a half tank.I just changed the cotton wick as the taste was fading and I'm considering whether to wind a new coil as I can see a fine layer of (I presume) ash on the coil that refuses to wash off under the tap and the taste is still slightly muted compared to the first tankful. I'll try a fresh battery+dry burn first though as the coil is a beauty(all coils nipped to form a tube-like affair that heats from the middle towards the ends)& I don't particularly fancy having yet another silicone grommet fall apart when I pull the centre-pin from the base.