I actually watched a video of some guy testing out various drying methods for a phone. The longest was rice at 10 days, about the same for silica and cat litter, letting the phone sit and air out was 3 days I think and the shortest method was putting it into a pillow case and taping the end of a vacuum into that and setting it into reverse to air dry. That took a few hours. Hair dryer I guess would be a similar effect so long as it was not hot air. As it turned out i never got around to trying the hair dryer and just let it be. Seems ok now.