- Just be stinky (or maybe they don't sweat?)
- Toilet stall sponge bath
- Lots of hand sanitizer and hope for the best
That appears to be the usual recommendation around here.
Oh, come! There is a lot more varied and helpful advice than that around here!
-Perhaps there is a nearby gym with reasonable membership where you could just shower
-Shower before biking, allow for cool-down period at work
-Take change of clothes (ranging from just new underwear/socks to full outfit); when biking wear wicking/cooling/lightweight material
-Bike slower
-Get in better shape
-Consider electric assist bike solution
-Consider mixed bike/public transit commute to lower distance
-Explore alternate routes for lower-stress riding (avoid hills/fast sections/busy areas)
-Adjust work/commute hours when it is hot out (usually go in earlier when it is cooler; then it's OK to get home all sweaty)
-Keep hygiene/freshening-up products in your desk
-Just wash your face off when you arrive
This issue is one where YMMV greatly though. I am very thankful for the showers at my work!