A light, breathable, two-layer cotton material will keep your face cooler than the medical N95 mask made from synthetic material though it can stop potential infectious droplets from cough and sneeze and it is twice as breathable.
Try to stay in well-ventilated locations which can help evaporate any extra moist from your cotton material mask.
Heat and perspiration mixed with makeup or oily skin care products trigger a mess under your mask.
Try to mask up with a clean skin but don’t forget the moisturizer, preferably with some SPF if planning to be out for long periods of time.
If you can’t keep your mask clean and tidy, especially during hot and humid days, have multiple masks available.