How to prevent 'red nose' by changing daily habits?

The cause is unknown but believed that sun light exposure is one of the triggering factors. Therefore, in order to prevent rosacea, daily sunblock application (with minimum SPF30) is necessary. If you start to notice the early symptoms of rosacea, such as persistent flushing on the cheeks, chin and forehead, you should be aware and try to stay away from the triggering factors (e.g, hot temperature, heat after exercise or anxiety,hot and spicy food, etc) because these factors would stimulate the flushing of the skin and worsen the rosacea condition.