First of all, prevention is the priority. Except for proper treatment and care, don't squeeze yourself during redness and inflammation. Most of the serious acne marks are related to their random squeezing. Disinfection of skin and finger equipment, unprofessional technology, incorrect judgment of acne degree. Squeezing acne can easily hurt the dermis, leaving pits and spots that can't be eliminated for life. Personal suggestion: French Blue Ocean Na Xin.