Any pore that is popped is essentially a scar and until such scars are healed, the skin will be vulnerable to any microorganisms from outside. During skin care, our devices help close such scars but some scars might remain fresh. This is why skin must be protected with utmost care during the two days following skin care. We highly advice against kissing and greeting. Person must use fresh bed sheets, tie hair up and prevent hair from having contact with skin. Also, for the first two days, only paper towels should be used after cleaning skin. If these precautions are taken, no problems such occur.