There is a bathroom I can lock at our office. I take off my shirt and wash up with soap. I also soak my head in the sink as my hair gets sweaty. Keeping my hair short helps with this though. Then I apply deodorant, put on work clothes and I'm ready for the office. I make sure the water I wash with is cold so that helps cool my body down quicker so I don't continue to sweat when I am done changing.