Don't sweat the lenses! Get some PURE acetone and soak them in there for a few minutes. You can try cleaning your lens pen, but I don't know how effective that would be. As a photographer, I always keep my lens pens closed in a plastic case. You can use 91% Isopropyl to clean the brushes as well. I still cough up the dough for new lens pens once a year or so.
If things are that dire, you can even remove the lenses from the barrels and do the acetone soak, then with POWDER-LESS gloves, use a lens safe, microfiber cloth to polish, then reassemble the lens assembly. Finish off with CO2...not canned air! You don't want to accidentally freeze the lenses.
For anyone interested, this is a service I will provide. IDK if it's worth it to anyone though to pay for shipping...