“Is it better to wash your face with hot water or cold water?”
Generally, it is recommended to use lukewarm water to wash your face along with a medicated cleanser, very mild soap or soapless cleanser. Using very hot or cold water can irritate the skin and existing acne lesions.
As well, remember that face washing should be limited to no more than twice daily. More frequent washing will not improve acne; rather, it can cause irritation and worsen acne.