Chemical peeling is one of dermatological treatments for certain cutaneous diseases or conditions or aesthetic improvement, which consists of the application of one or more chemical agents to the skin. Chemical peeling has been very popular in medical fields as well as aesthetic fields. Since scientific background and adequate approach is not completely understood or established, medical and social problems have been reported. This prompted us to establish and distribute standard guideline of care for chemical peeling. Previous guidelines such as 2001 version and 2004 version included the minimums for the indications, the chemicals used, their applications, associated precautions, and postpeeling care and findings. The principles were as follows :1) chemical peeling should be performed under the control and the responsibility of the physician. 2) the physician should have knowledge of the skin and subcutaneous tissue and understand the mechanism of wound-healing. 3) the physician should be board-certified in an appropriate specialty such as dermatology. 4) the ultimate judgment regarding the appropriateness of any specific chemical peeling procedure must be made by the physician in light of all standard therapeutic ways, which are presented by each individual patient. Keeping these concepts, this new version of guidelines includes more scientific and detailed approaches from the evidence-based medicine.