If you wash them in the laundry, the rinse cycle 
will get rid of all the soap. Just be sure 
they've dried before you use them again. The 
worst that can happen to them is that they'll get 
frayed over time, because cotton gloves aren't 
really built to be sturdy. If you want to make 
them last longer, you might want to wash them on 
the "delicate" cycle, or hand-wash them... but 
that's just for the gloves' sake, not anything 
else.

But you run a bigger risk of damaging your cels 
from not being able to have a good grip with your 
gloved hands, than you do of getting laundry 
residue on them after a wash. ^_^

So, yeah. It looks like you're doing well for 
yourself! :o)

-Cres
*museum person extrordinaire*