Itchy hives after shower?

I use hypoallergenic soaps because I buy it for my kids. I never get rashes or hives but about 1-2 times a month right after a shower, I’ll get one of these itchy mosquito looking bumps on my face. Anyone else get these after showering? Must be due to the heat, right? They go away within a couple hrs but ugh! Can’t even put on makeup right now