If you have a shower fan or bathroom fan you are supposed to shower with the fan on to remove the humidity in the bathroom.
Some people shower and then turn the fan on after but in reality when you shower you're supposed to turn the bathroom fan on before you get into the shower.
This way as you shower the steam and humidity is removed from your bathroom instead of lingering in the bathroom to create mold.
About a minute before I get into the shower I turn on my shower fan so that the steam and humidity escapes.
You should also run the bath fan or shower fan for at least 20 minutes after your shower to ensure the humidity and moisture gets out of your bathroom.
Showers increase the humidity in the bathroom.
Sometimes it gets high enough to cause condensation to appear on the mirror and other surfaces in the bathroom.
And that can result in mold growth. So you should always run your bath fan when you shower.
Whether you have an extractor fan or not, if you have a window in your bathroom, leave it open during and after showering to let out steam and assist with ventilation.
Bathroom exhaust fans and vent fans for your stove can be key in keeping a low humidity level in your house.
These products are designed to remove the excess humidity that is created by showering, boiling water, and other activities that will create excess moisture in the air.
If you have a window in your bathroom and no exhaust fan then you can crack the window open or open it all the way when showering.
Or run the air conditioner if you have central air to help get rid of the humidity in your bathroom.
Or after showering you can leave the bathroom door open so the steam does not stay in the bathroom and can go throughout the house.