Is warm compress effective for acne pustule ?

Yes: Pustules, boils, fluid filled cysts, etc. can benefit from warm moist compresses which may help them drain or heal faster. Avoid excessively warm temperatures and rubbing, as this may further inflame these lesions and cause worsening.

Yes: Depending on the size and whether it is ripe warm compresses can open up and allow the pimple to drain minimizing infection and squeezing and pain.